Journal articles: 'Ansys Steady State Thermal'

1

Peng, Ying. "Research of Thermal Analysis Collaboratively Using ANSYS Workbench and SolidWorks Simulation." Applied Mechanics and Materials 127 (October 2011): 262–66. http://dx.doi.org/10.4028/www.scientific.net/amm.127.262.

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This paper introduces the basic theory of thermal analysis and the use of SolidWorks Simulation and ANSYS Workbench to complete the steady-state thermal analysis about related models, thus getting steady temperature distribution of the model. By comparing the differences between SolidWorks Simulation and ANSYS Workbench, we can finally work out the optimal method for product design and simulation .

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Chen, Kai Kang, Fu Ping Li, and Yong Sheng Zhao. "FEA of Thermal Characteristic of Motorized Spindle Based on ANSYS Workbench." Applied Mechanics and Materials 437 (October 2013): 36–41. http://dx.doi.org/10.4028/www.scientific.net/amm.437.36.

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Thermal deformation of high-speed motorized spindle has an important effect on improving the machining accuracy. In this paper the thermal boundary conditions of thermal deformation, including the heat generation of the motor and bearing and heat transfer coefficient, are calculated to simulate the steady-state temperature field distribution, transient thermal analysis and thermal deformation in ANSYS Workbench. They provide theoretically the data for the thermal error compensation of the spindle system.

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Shi, Yan Yan, Lin Li, Xiang Feng Kong, Jin Hua Li, and Hong Sun. "Study on the Steady State Thermal Analysis Method of Accessory Transmission System." Applied Mechanics and Materials 198-199 (September 2012): 162–66. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.162.

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The mathematical model of steady state thermal analysis of accessory transmission system is built according to heat transfer theory, the governing equation functional of the steady state temperature field of accessory transmission system is derived on the basis of the variation principle, and the method to calculate the steady state temperature field of accessory transmission system is proposed with the finite element software ANSYS and its secondary switching language APDL. The result shows that the prediction of temperature field fit in with the heat flow law, then the correctness and validity of the proposed thermal analysis method is verified.

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Yuan, Hui Qun, and Chol Nam Ri. "Modal Analysis of Gear Considering Temperature Based on ANSYS." Advanced Materials Research 482-484 (February 2012): 1209–12. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1209.

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In this paper, regarding a spur gear as the object, the natural characteristics under thermal effect are calculated by using ANSYS. Firstly, taking the friction heat and convection heat as the thermal loads, the gear is analyzed under a steady state temperature. Secondly, taking the thermal stress into account, the natural frequencies are calculated. Comparing the natural frequencies between change and without change of temperature. The result of this study shows that the thermal stress produced by the variation of temperature is the main reason of natural frequency change.

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Muhi, Mohsin Obaid. "Effect of Sample Length on the Time Needed to Reach the Steady State Case." Journal of University of Babylon for Engineering Sciences 27, no. 2 (May 28, 2019): 171–82. http://dx.doi.org/10.29196/jubes.v27i2.2306.

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In this study, ANSYS-14 was used to study the effect of the length of the sample on the time needed to reach steady state (S.S.t) for the transient heat transfer. Three samples were studied in different lengths (15, 30 and 45 cm), 2 cm high, in addition to the selection of three materials with different thermal properties and applied to different lengths. One side of the three samples was exposed to a temperature at 100 ° C, while the other side was exposed to thermal load at 25 ° C and the sample was isolated from the top and bottom surfaces. The objective of this study is to determine the effect of the time reach to the steady state when changing the length of the sample exposed to constant thermal load and materials, depending on the distance from the hot face of all lengths at a number of points (3, 6, 9 and 12) cm. From the results of the time obtained numerically from the ANSYS-14 program, the time to reach the steady state was determined when the difference between the sample temperature reached with the previous grade of 0.001.The results indicated that the time required to reach the steady state (S.S.t) increases by increasing the length of the sample in the selected points when constant thermal diffusivity (α) ,where the time needed to reach the steady state of the copper material ranged between (879-1085) seconds at a length of 15 cm and (2112- 3005) seconds at length 30 cm and (2871-4937) seconds at a length of 45 cm as well as the results showed that the time required to reach the steady state increased with the thermal diffusivity decrease where the time required to reach the steady state of the copper of the highest thermal diffusivity ranged between (879-4937) seconds for all lengths while the time required to reach the steady state of the material of the lowest thermal diffusivity (hardboard) is between (168400-1078000) seconds.

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Wang, Jian Xin, and Tong Zhang. "Strength Analysis of Miniature Thermoacoustic Refrigerator Resonance Tube Based on ANSYS." Advanced Materials Research 926-930 (May 2014): 2578–81. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.2578.

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Using fluid analysis software Fluent6.3 to numerical analysis of thermoacoustic refrigerator, and have a conclusion of the temperature distribution and pressure distribution of resonance tube when the refrigerator is stable. The temperature and pressure as the initial conditions applied in the refrigerator to thermal stress analysis, and find the stress distribution in the steady state resonance tube.

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Gabriel Kristian Tarigan, Ardyanta. "Designing new pot design using Ansys steady state thermal to reach 215 ka pot technology." IOP Conference Series: Materials Science and Engineering 801 (June 3, 2020): 012129. http://dx.doi.org/10.1088/1757-899x/801/1/012129.

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Lu, Chao. "Analysis on Thermal Fatigue Fracture on Engine Exhaust Manifold Based on ANSYS." Advanced Materials Research 217-218 (March 2011): 1531–35. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.1531.

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The thermal fatigue fracture of engine exhaust manifold will affect its service life and engine work, to prevent and resolve this problem, finite element analysis software ANSYS was used to establish a finite element model for exhaust manifold work environment, and calculate the steady-state temperature distribution under the thermal field. Through the thermal stress analysis of manifold, identified the region most prone to the generate thermal stress and fracture, conducted failure analysis, for the existing problems analyzed the reason of thermal fatigue fracture on exhaust manifold, and provided a reliable basis for the optimization of the exhaust manifold. The thermal fatigue failure of exhaust manifold got good improvement after the structure improvement.

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Nie, Xue Jun. "Spindle Thermal Analysis of CNC Milling Machine." Advanced Materials Research 765-767 (September 2013): 88–91. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.88.

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In this paper, the spindles thermal characteristics of CNC milling machine in steady state and transient state are analyzed by using ANSYS, the temperature field and thermal deformation field are obtained. After a number of tests are done in different working conditions, the temperature and thermal deformation changes of spindle are measured in every working condition. Combing the FEM analysis with tests results, the thermal deformation of spindle from starting to reach thermal balance on CNC milling machine is discussed, some suggestions are presented to improve the process precision of CNC milling machine.

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Liu, Liang, Zheng Lin Liu, Jun Wang, and En Gao Peng. "Coupled Thermal-Structural Analysis of Mechanical Seal." Advanced Materials Research 479-481 (February 2012): 1110–14. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.1110.

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Based on ANSYS software and combined with the theory trends on stern shaft seal performance, the steady-state thermal structure coupling and transient thermal structure coupling analysis of stern shaft mechanical seal had been carried on. It showed that the transient thermal structure coupling analysis was more close to the actual condition of stern shaft seal. The result of transient state analysis indicated the thermal-mechanical effect on seal face during starting, and showed that the contact area was decreased especially the temperture rise rapidly inside of the seal.

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Li, Wei Ming. "Numerical Simulation Analysis of Electronic Equipment Thermal Reliability in Steady-State Temperature Field." Applied Mechanics and Materials 513-517 (February 2014): 3184–87. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.3184.

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In recent years, with the rapid development of electronic information technology, electronic devices are used in all areas of our lives. The power consumption is transmitted to the surrounding through the form of heat when electronic components at work. Each of the components is a source of heat when it is working. If it works in a hot environment long times, the stability will be affected and its life will also decreases. Therefore, in the initial design phase of electronic equipment, thermal stability and thermal reliability must be analyzed to reduce these uncertainties. This article solve the optimal layout problem of components in PCB board by establish micro unit heat balance method. It also concludes that the micro unit heat balance method is reasonable through ANSYS finite element analysis.

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Ma, Geng Sheng, Fang Chen Yin, Xiao Yan Zhu, Wen Peng, Jian Zhao Cao, Jing Guo Ding, and Dian Hua Zhang. "The Application of Steady-State Thermal Expansion of the Rolls in Thickness Setup Model for HSM." Advanced Materials Research 941-944 (June 2014): 1696–99. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1696.

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The hot rolled strip thickness accuracy sometimes can not be guaranteed after a long time for waiting for slabs or other reasons. The reason is when rolling, the rollgap adaptive model has considered the thermal expansion of the roll. So when rolling is restarted, thermal expansion of the rolls must be cleared in order to accurately calculate the setup rollgap value. The finite element software ANSYS is used to calculate the temperature field and thermal expansion amount of the rolls in the rolling process. Application results show that this method can improve the accuracy of strip thickness.

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Liu, Le Ping, and Guo Hong Deng. "Thermal Analysis and Optimization Design on Spindle Bearing of GSCK200A CNC Lathe." Advanced Materials Research 314-316 (August 2011): 1760–63. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1760.

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Establish the three-dimensional finite element model of GSCK200A type High-speed & high-precision CNC Lathe spindle bearing, based on tribology and heat transfer theory, using ANSYS to analyze the corresponding temperature field and thermal deformation of spindle bearing in steady working state, according to this thermal deformation to obtain decrease volume of radial clearance, and the installation clearance optimization scheme is putted forward.

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Luo, Yan Yan, Yi Wen, Liang Hao, Xin Wei Liu, Yi Jun Wang, Lei Liu, Fang Yao, Zhen Wang, and Shu Mei Zheng. "Numerical Analysis on Temperature Field of Electric Connectors." Advanced Materials Research 852 (January 2014): 602–7. http://dx.doi.org/10.4028/www.scientific.net/amr.852.602.

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The steady-state thermal analysis models are established based on the thermal analysis of the Electric connectors. With the consideration to the internal heat conduction and the convection cooling, the three-dimensional solid model is imposed by the reasonable loads and boundary conditions and analyzed by ANSYS thermal analysis module. The numerical analysis is made on the temperature field of a certain type of Electric connectors at different environmental temperature and different working current. The simulation results are compared with the monitoring test data.

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Zhang, Xiao Guang, Ying Jie Ji, Shi Gang Wang, and Xiao Li. "Numerical Simulation of the Effect of Particle Random Spatial Distribution on the Thermal Conductivity of Composites." Key Engineering Materials 561 (July 2013): 130–34. http://dx.doi.org/10.4028/www.scientific.net/kem.561.130.

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The overall thermal properties of particle reinforced composites are of primary importance for practical applications. Effect of random spatial distribution of sphere particles on the thermal conductivity of composites was numerically studied by ANSYS Workbench Steady-State Thermal analysis module. MATLAB procedure is used to achieve random distribution of particles in composites and to generate a representative volume element (RVE) model. The simulation results indicate that, at the same volume fraction, the random distribution has higher thermal conductivity than the uniform distribution; effect of particles’ spatial distribution on thermal conductivity is greater than volume fraction especially when the volume fraction is between 15% and 35%.

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Yang, Bo, Lu Xu, Wen Shu Fu, and Yun Peng Deng. "The Thermal Analysis and Simulation of On-Chip Temperature Control Technology in the Micro-Gyroscope." Advanced Materials Research 940 (June 2014): 386–90. http://dx.doi.org/10.4028/www.scientific.net/amr.940.386.

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The thermal analysis and simulation of on-chip temperature control technology in the micro-gyroscope is researched. According to the thermal dissipation mechanism, the thermal resistance model of on-chip temperature control technology is established. The equantions of the conduction thermal resistance and the radiation thermal resistance are deduced. According to the lumped parameter model, the transient thermal response of the proof mass is derived. Theoretical analysis indicates the temperatures of the micro-heater and the proof mass are respectively 136.79°C and 59.95°C in equilibrium conditions. The Ansys simulation model of on-chip temperature control gyroscope is constructed to optimize the transient thermal response and the temperature distribution in steady-state. The simulation results show that the maximum temperature of glass thin-film is about 137.2°C, the temperature of gyroscope structure is about 58.5°C and the temperature difference is within 1°C in the steady-state. In the transient response, the temperature of gyroscope structure can be stabilized in the 12.5s. The simulation results prove that the on-chip temperature technology of micro-gyroscope has an excellent temperature uniformity and rapid temperature response.

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Kumar, Chandan, and Nilamber Kumar Singh. "Responses of Aluminium Alloy Pistons under Mechanical and Thermal Loads." Materials Science Forum 969 (August 2019): 231–36. http://dx.doi.org/10.4028/www.scientific.net/msf.969.231.

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A comparative study of three different aluminium alloys, Al2618, Al4032 and Al6061 made internal combustion engine pistons is done on their responses under mechanical and thermal loads using finite element methods. In this study, a 3D solid model of piston is created in CATIA and the simulations of the static structural analysis, steady-state thermal analysis and transient thermal analysis are carried out in ANSYS. Stress and temperature distributions on critical areas of piston are pointed out for appropriate modification in piston design. The temperature and heat flux variations with time are presented in transient thermal analysis. Taguchi method and topological optimization are applied to optimize the process parameters and to select the appropriate material for the piston.

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Saidi, Fethi, Mohammed Aounallah, Mustapha Belkadi, Lahouari Adjlout, and Omar Imine. "Numerical Simulation of Turbulent Thermal Fluid in Tee Water Duct Cooled Nuclear Reactor." Applied Mechanics and Materials 789-790 (September 2015): 484–88. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.484.

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The turbulent and thermal mixing in a vertically oriented T-junction is investigated numerically using ANSYS FLUENT software. By taking account the buoyancy forces, a steady state three-dimensional turbulent flow is considered with a Reynolds number of 0.4×105 at the cold inlet and 3.3×105 at the hot entrance. The k-ε standard model with standard wall function is chosen to provide closure for the Reynolds stress tensor. The numerical results presented in the form of velocity vectors field and contours of temperature distribution gave a good prediction of the dynamic and the thermal fields namely in the mixing region where a reversed flow is captured.

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Sy Truong, Dinh, Byung-Sub Kim, and Jong-Kweon Park. "Thermally affected stiffness matrix of angular contact ball bearings in a high-speed spindle system." Advances in Mechanical Engineering 11, no. 11 (November 2019): 168781401988975. http://dx.doi.org/10.1177/1687814019889753.

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Bearing stiffness directly affects the dynamic characteristics in a high-speed spindle system and plays an important role in terms of manufacturing quality. We developed a new approach for predicting the thermal behavior of a high-speed spindle, calculated the thermal expansion, and generated a bearing stiffness matrix for angular contact ball bearings. The heat convection of spindle housing in air, the balls in lubricant, the spindle shaft in quiescent air, and the bearing inner ring surfaces were determined. Heat sources such as bearing friction, and the heat contributed by the built-in motor, were simulated using an analysis systems (ANSYS) steady-state thermal model. The results were imported into a static ANSYS structural model. Ball thermal expansion was calculated based on changes in the coordinates of nodal points on the ball surface. Finally, a thermally affected bearing stiffness matrix was generated by applying the Newton–Raphson technique. Decreases in the bearing radial, axial, angular, and coupling stiffness values as rotational spindle speed increased were calculated. Also, the stiffness coefficients at a specific speed increased significantly caused by the thermal effects. Finally, for validation, the bearing stiffness was compared to that calculated using an earlier thermal network approach.

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Tao, Mao Ke, Zong Bao Shen, Cheng Zhang, and Kai Wang. "Numerical Simulation of Laser Thermal Stress Forming of Thin Steel Sheet." Advanced Materials Research 160-162 (November 2010): 1414–19. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.1414.

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Laser thermal stress forming is a flexible forming process that forms sheet metal by means of stresses induced by external heat instead of by means of external force. Based on the analyzing of the influence of temperature on the thermal and mechanical properties of the materials, a 3D thermal-mechanical coupling model of laser thermal stress forming of thin steel sheet is set up in this paper. Based on ANSYS APDL developing platform, the stress field, temperature field and deformation field are obtained by numerical simulation of laser scanning of Q235 mild steel sheet for one time. Moreover, the forming progress and mechanism have been analyzed. The results show that the laser thermal stress forming is a quasi-steady-state process and its forming mechanism belongs to temperature gradient mechanism.

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Guo, Xin Hua, Guang Deng Yang, Jin Yuan Fu, and Ke Huang. "Thermo-Mechanical Reliability of 1200V-450A IGBT Module Considering Voids in the Solder Layer." Materials Science Forum 954 (May 2019): 202–9. http://dx.doi.org/10.4028/www.scientific.net/msf.954.202.

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1200V-450A IGBT power modules are fabricated in this paper. We study both the steady state and transient thermal performance of the IGBT assemblies by the finite element method using commercial software ANSYS Workbench to better understand the characteristic. Furthermore, power cycling tests indicate that inelastic strain increase as the numbers of cycles increase. In addition, X-ray photographs and ultrasound scan images were compared before and after the experiment. The thrust force of bonding wires decrease with increasing numbers of cycles, as indicated by tested.

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Liang, Li Li, and D. G. Yang. "Design Thermal Structure of Aluminum Plate LED." Advanced Materials Research 189-193 (February 2011): 1498–501. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1498.

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The proportion of LED in the lighting area gradually increased. But its high price, the low luminous efficiency, reliability problems restricted its global application. Therefore, for reliability problems, design a thermal structure of 19.2W multi-chip on board aluminum plate LED. Enhance the reliability mainly by settle a piece of silicon between the aluminum plate and the chips. Analyze by finite element method and use the ANSYS simulation software, the simulation for the thermal field is performed. Identify the optimal combination of structural parameters by using the orthogonal experimental method. The maximum steady-state temperature is less than 53.69 °C. Analyze the thermal-structure coupling simulation of the optimization of the thermal structure and reach the maximum thermal stress of 144MPa. So we can say that heat stress in terms of the design is safe and reliable. Eventually arrive at a more ideal LED aluminum plate thermal structure.

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Mendes, Gabriel, Ângela Ferreira, and Ednei Miotto. "Coupled Electromagnetic and Thermal Analysis of Electric Machines." MATEC Web of Conferences 322 (2020): 01052. http://dx.doi.org/10.1051/matecconf/202032201052.

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This paper deals with the design process of electric machines, proposing a design flowchart which couples the electromagnetic and thermal models of the machine, assisted by finite element techniques. The optimization of an electrical machine, in terms of the energy efficiency and cost reduction requirements, benefits from the coupling design of the electromagnetic and thermal models. It allows the maximization of the current density and, consequently, the torque/power density within thermal limits of the active materials. The proposed coupled electromagneticthermal analysis is demonstrated using a single-phase transformer of 1 kVA. Finite element analysis is carried out via ANSYS Workbench, using Maxwell 3D for the electromagnetic design, with resistive and iron losses directly coupled to a steady-state thermal simulation, in order to determine the temperature rise which, in turn, returns to electromagnetic model for material properties update.

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Rajiyah, H., L. P. Inzinna, G. G. Trantina, R. M. Orenstein, and M. B. Cutrone. "Thermal Shock Analysis and Testing of Simulated Ceramic Components for Gas Turbine Applications." Journal of Engineering for Gas Turbines and Power 118, no. 2 (April 1, 1996): 246–50. http://dx.doi.org/10.1115/1.2816584.

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A ceramic gas seal for a utility gas turbine was designed and analyzed using ANSYS and CARES/LIFE. SN-88 silicon nitride was selected as the candidate material. The objective was to validate the failure prediction methodology using rectangular plates, which were thermally shocked in a fluidized bed. The failure prediction methodology would then be applied to the representative component geometry. Refined ANSYS finite element modeling of both the plate and component geometries was undertaken. The CARES/LIFE reliability analysis of the component geometry for fast fracture was performed for two cases: (I) steady-state thermomechanical loads during normal gas turbine operation and (II) transient thermal shock loading during a turbine trip. Thermal shock testing of alumina disks was performed in order to gain confidence in the testing and analysis procedures. Both notched and unnotched SN88 plates were then tested. Failure modes were identified through flexure tests and data censoring was performed using SAS. Weibull modulus was assumed to be invariant with temperature and the scale parameter was assumed to vary through a scaling variable such that multiple data could be pooled.

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Wang, Kun Qi, Wei Zheng, and Dan Dan Na. "The Method of Two-Dimensional Stretching to Reduce Residual Stress in Quenched Thin-Walled Aluminum Alloy." Advanced Materials Research 1095 (March 2015): 523–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.523.

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This study aims to reduce the residual stress of quenched thin-walled aluminum alloy. The method of two-dimensional stretching was proposed to further reduce the residual stress in the alloy. The steady-state and transient thermal analysis were used in ANSYS workbench15.0. Static structural was used to simulate one-dimensional and two-dimensional stretching. The simulation results show that two-dimensional stretching method is better than one-dimensional stretching, and it can eliminate the residual stress up to 92.6% when the amount of stretching in length and width is controlled in 2.5%.

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Liu, De Ping, Jie Li, Yu Feng Su, and Yu Ping Wang. "Temperature Field Modeling and Thermal Deformation Analysis of Turning and Milling Machining Center." Advanced Materials Research 189-193 (February 2011): 1986–90. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1986.

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Taking the high-speed CX series vertical milling compound machining center of CX8075 produced by Anyang Xinsheng Machine Tool Co., Ltd. as example, the machine three-dimensional simplified model is established, the source of the heat and the distribution of the important hot-points are analyzed, the machine temperature field distribution is derived which lays a foundation for the thermal error compensation. Taking into account the moving part-saddle of the machining center, its mathematic model is obtained, the important hot-points are studied, the thermodynamic parameters are determined. Based on ANSYS finite element method, the steady-state temperature field and the thermal deformation of saddle are presented, the optimal design of high-speed and high-accuracy machine tool is doned and its thermal deformation analysis is realized.

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Shankapal, S. R., Parikshith Mallya, Jayashree Shivkumar, and N. Venkateswaran. "Design Analysis of Brushless Direct Current Generator." Defence Science Journal 67, no. 4 (June 30, 2017): 437. http://dx.doi.org/10.14429/dsj.67.11546.

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<p class="p1">In this work, optimisation of a brushless direct current (BLDC) generator design was undertaken by carrying out an electromagnetic and computational fluid dynamic study. The studies were carried out for different loading-overloading conditions and angular speeds, keeping in consideration the required electrical and thermal parameters, firstly for the initial design and then for optimised designs. In the initial phase, transient electromagnetic simulations were done using Ansys Maxwell to estimate power output, flux densities, heat losses et al. In the next phase, steady state conjugate heat transfer simulations using frozen rotor method for rotating domains were carried out in Ansys CFX using the heat loss values obtained from electromagnetic study in the first phase. The results from conjugate heat transfer were obtained in the form of temperature and flow parameters. After a thorough study and comparison of the results for different designs, obtained in the two phases, it was seen one of the optimised designs showed better electromagnetic, thermal and flow parameters as compared to the initial design and satisfied all the optimum electrical and thermal parameters.</p>

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Lang, Jiaqi, Chundong Hu, Yuanlai Xie, and Yunhua Tong. "Optimization Analysis of the Structural Design of NNBI Cryosorption Pumps." Energies 14, no. 12 (June 18, 2021): 3628. http://dx.doi.org/10.3390/en14123628.

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Cryosorption pumps create a vacuum by adsorbing gas at low temperature through porous solid adsorbents. The transmission probability of gas molecules and heat loads of cryosorption pumps are important factors affecting its performance. Herein, Molflow software based on the Monte Carlo principle is used to analyze the effects of the structural design of cryosorption pumps on transmission probability. The influence of structural design on radiation heat transfer is analyzed by ANSYS Steady-State Thermal software. This provides a reference for the design of a cryosorption pump to validate the prototype of a neutral beam injector for the China Engineering Fusion Experimental Reactor (CFETR).

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Elmaryami, Asa, Abdulla Sousi, Walid Saleh, Sharefa El-Mabrouk Abd El-Mawla, and Mohamed Elshayb. "MAXIMUM ALLOWABLE THERMAL STRESSES CALCULATION OF WATER TUBE BOILER DURING OPERATION." International Journal of Research -GRANTHAALAYAH 7, no. 7 (July 31, 2019): 191–99. http://dx.doi.org/10.29121/granthaalayah.v7.i7.2019.747.

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In steam boiler industrial sector, pressure and temperature of the water tube are the two main factors that affecting the safety and efficiency of a steam boiler. Explosions may be occurring because of a sudden drop in pressure without a corresponding drop in temperature. Therefore, understanding the temperature distribution of the water tube boiler is essential control the failure and explosion of the boiler. Once the temperature distribution is known then the limiting factors that affect the water tube life such as maximum allowable thermal stresses can be determined. ANSYS software will be used to determine the temperature distribution in the water tube of a utility boiler during operation at elevated inlet water and furnace temperature. The theory of axisymmetric has been utilized since water- tube is cylindrical in shape. In axisymmetric theory, a three-dimensional cylindrical problem like water tube can be reduced to two dimensional by ignoring the circumferential Ө, while r-axis and z-axis became x-axis and y-axis or Cartesian coordinate. Then two-dimensional rectangular elements meshing for the profile cross-section along the water tube in r and z axes were implemented in a computerize simulation using ANSYS 10 to find out the steady state temperature distribution of the water tube.

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Mohapatra, Kasinath Das, Susanta Kumar Sahoo, and Munmun Bhaumik. "Thermal Modeling and Structural Analysis in Wire EDM Process for a 3D Model." Applied Mechanics and Materials 852 (September 2016): 279–89. http://dx.doi.org/10.4028/www.scientific.net/amm.852.279.

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Wire EDM is one of the most non conventional machining processes used for cutting of different types of complex materials. Copper material in wire EDM has a wide application in several industries but its thermal and structural analysis in wire EDM has challenged the authors to model the work-piece and tools accurately using the software. The present work deals with the design of a 3 dimensional model of a work-piece material made of copper. The objective of the present work is to analyse the temperature, total heat flux and equivalent stress of the work-piece material using finite element analysis in ANSYS software. In the current work, a 3D model was designed with the Steady state thermal analysis and it was designed with the available experimental data using ANSYS workbench. The temperature and the total heat flux were calculated using this analysis. Another analysis is performed using Static structural to calculate the equivalent stress generated in the work-piece material using ANSYS. The model was developed for single spark only. Automated type of meshing and axi-symmetric type of geometry are considered for this experiment. The wire part is neglected and all the analysis is made on the work-piece only. XRD analysis is also performed on the work-piece material to know the crystallinity of the compound. Mesh Convergence test was also performed to determine the optimum solution for the requisite mesh. Finally the model was designed and various graphs were plotted for the temperature, total heat flux and equivalent stress of the material.

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Yue, Guo Liang, Yong Qiang Wang, Jie He, and Hong Liang Liu. "Research of Temperature Field in Oil-Immersed Transformer Considering the Oil Speed." Advanced Materials Research 912-914 (April 2014): 1041–45. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1041.

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In this paper, we have Elaborated the mathematical model of temperature field and flow field of the oil-immersed transformer, and analysis its structure of thermal .We established a temperature finite element model of an oil-immersed transformer using the method of flow-solid-thermal coupling. Using the software of ANSYS, simulating on a 250MVA oil-immersed transformer, we obtain the steady-state temperature distribution and the winding hottest locations. Analyze the effect of oil-speed to the temperature field and location of the hot spot temperature of oil-immersed transformer. The results show that when oil flow rate is increases in the normal range, Transformer temperature rise corresponding slowly, and its location hottest temperature slightly pulled accordingly. The fiber measure different speeds Oil immersed transformer winding hot spot temperature to provide a basis for positioning.

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Mou, Xiao Jie, Yue Tong Xu, and Feng Jun Jiang. "Heat Analysis of a Flat Permanent-Magnet Linear Synchronous Motor." Advanced Materials Research 328-330 (September 2011): 974–78. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.974.

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The heat of linear motor affects normal operation of the motor seriously. The accurate computation of temperature field will provide a theoretical foundation for the design and control of linear motor. A three-dimension thermal model of linear motor is created in this paper. As the linear motor is running back and forth in an adjustable speed, the mean effective current of linear motor can be calculated firstly. On this basis, the calorific value of windings is calculated. The heat transfer coefficient of linear motor in each surface is calculated when the linear motor is running in a low speed. Then the steady state temperature field of the flat linear motor is simulated by the finite element software ansys.

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Majumdar, Aritra, and Debabrata Das. "A study on thermal buckling load of clamped functionally graded beams under linear and nonlinear thermal gradient across thickness." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 232, no. 9 (May 12, 2016): 769–84. http://dx.doi.org/10.1177/1464420716649213.

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The present work aims at the determination of thermal buckling loads of various functionally graded material beams with both ends clamped. Thermal loading is applied by applying linear temperature distribution and nonlinear temperature distribution at steady state heat conduction condition, across the beam thickness. Temperature dependences of the material properties, considered in the formulation, make the present problem physically nonlinear. Also, the effect of limit thermal load at which the effective elastic modulus and/or thermal expansion coefficient become theoretically zero is considered. The mathematical formulation is based on Euler–Bernoulli beam theory. An energy based variational principle is employed to derive the governing equations as an eigenvalue problem. The solution of the governing equation is obtained using an iterative method. The validation of the present work is carried out with the available results in the literature and with the results generated by finite element software ANSYS. Four different functionally materials are considered, namely, stainless steel/silicon nitride, stainless steel/alumina, stainless steel/zirconia, and titanium alloy/zirconia. Comparative results are presented to show the effects of variations of volume fraction index, length–thickness ratio, and material constituents on nondimensional thermal buckling loads.

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Ma, Shiqi, Wolfgang Heinrich, and Viktor Krozer. "Design of an Embedded Broadband Thermoelectric Power Sensor in the InP DHBT Process." Engineering Proceedings 2, no. 1 (November 14, 2020): 10. http://dx.doi.org/10.3390/ecsa-7-08206.

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The thermopile-based thermoelectric sensor has emerged as an important approach for microwave power measurement. It employs the Seebeck effect, which converts the microwave power into the heat and generates the thermovoltage. However, the output thermovoltage generally exhibits a frequency-dependent feature, which affects measurement accuracy. Besides, the low sensitivity of the current existed planar thermopile-based sensor constrains its further application. This is mainly caused by the heat loss of the substrate in the conversion process of microwave power-heat-electricity. In this paper, a novel embedded power sensor based on the indium phosphide (InP) double heterojunction bipolar transistor (DHBT) process is presented. The thermopile is embedded in the benzocyclobutene (BCB) to prevent the heat loss, and the embedded structure also enables this sensor to eliminate the need for microelectromechanical system (MEMS) technology. The electromagnetic simulation by ANSYS high frequency structure simulator (HFSS) and thermal simulation by ANSYS Steady-State Thermal are combined to evaluate the sensor performance. The result shows that the output voltage increases with the input power linearly, and the proposed sensor is almost independent of the microwave frequency. A sensitivity of l.07 mV/mW has been achieved up to 200 GHz, with the port return loss lower than −15.8 dB.

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Li, Bing, Hong Rui Cao, and Zhi Liang Yang. "Thermal Analysis of Axial Driving System for Numerically Controlled Machine Tool." Applied Mechanics and Materials 86 (August 2011): 879–82. http://dx.doi.org/10.4028/www.scientific.net/amm.86.879.

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In the processing of manufacturing, the rising of temperature caused by friction heat, cutting heat, ambient temperature and other factors will lead to thermal deformation of the driving components of machine tool, so that the correct position between the tool and work piece will be changed. And at the same time, machine tool will lose its intrinsic accuracy and reduce its reliability. Especially in the precision cutting processing, machining errors caused by the thermal deformation of driving system will not be ignored, almost accounting for 40%~70% of the total errors. This paper is aided by a key project called ‘High-end CNC machine tools and basic manufacturing equipment’. By using CAE software ANSYS, the temperature field of axial driving system is gain through analyzing the steady-state thermal of machine tool. The experiment is used to capture physical picture of temperature field. At last, compared with the result of the experiment, we can know better the reliability of the analysis results. The results can be useful references for different axial driving system design in numerically controlled machine tool.

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Tandon, Adhir. "Design, Optimization and Analysis of a 4-stroke Diesel Engine Piston and Piston rings using Different Materials." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 10, no. 01 (July 25, 2018): 71–80. http://dx.doi.org/10.18090/samriddhi.v10i01.10.

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Modern Automobiles expect a high performance from its engines, which in turn places its requirements on the piston and cylinder components. Hence the piston has to deal with harsher, and tougher thermal and mechanical conditions. It has to undergo higher operating temperatures and pressures as well as higher speeds and at the same time keeping a check on the emissions. Pistons play a key role in increasing engine efficiency by reducing weight and frictional losses. This has made it essential to devise and search unique and creative concepts and materials for Pistons repeatedly, which offers what the engine demands. In this work Aluminium Alloy-4032 has been selected as the piston material of a 4-Stroke Diesel Engine and the piston rings are made of grey cast iron and alloy steel. Piston is designed by analytical methods taking both thermal and structural effects into consideration, then modelled on CATIA V5 and the analysis of structural deformation due to thermal stresses has been done using Finite Element Analysis of Steady State Thermal and its effect on static structure using Analysis software ANSYS

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Tian, Shujian, Guozhuang Li, Jun Liu, Haoyun Yuan, Xiaoyong Song, and Weishu Wang. "Numerical simulation of decay heat scattering out of AP1000 nuclear reactor spent fuel cask based on finite element method." Thermal Science 24, no. 5 Part A (2020): 2781–92. http://dx.doi.org/10.2298/tsci191023011t.

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The heat transfer performance of the spent fuel transport cask is inseparably related to the safety of the whole reprocessing system. In this study, we carried out the thermal analysis on the NAC-STC transport cask for AP1000 spent fuel assembly to evaluate the thermal performance of transport cask by the finite element method software ANSYS. A computational dynamics model was developed to study the temperature distribution inside the transport cask and on the surface of the cask. The effectiveness of the numerical calculation is demonstrated by comparing with the theoretical results. The results show that transport cask can reach steady-state during transportation, and the highest temperature in the case is 328?, which is below the maximum safety limit of 400?. Besides, the temperature of the fuel element baskets, sealing ring, photon shielding layer and neutron shielding layer in the cask are all within the safety limit.

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Li, Xiaohu, Jinyu Liu, Cui Li, Jun Hong, and Dongfeng Wang. "Research on the influence of air-gap eccentricity on the temperature field of a motorized spindle." Mechanical Sciences 12, no. 1 (February 9, 2021): 109–22. http://dx.doi.org/10.5194/ms-12-109-2021.

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Abstract. The air-gap state between the stator and rotor is an important indicator to measure the performance of a motorized spindle. It affects the temperature field distribution of the motorized spindle and the machining accuracy of the mechanical parts. Since the accurate thermal model is the basis of the research on the temperature field distribution of the motorized spindle, in this paper, firstly, the mechanical loss, electrical loss and magnetic loss of the motor under different air-gap eccentricities are calculated and the heat-generating power of an angular-contact ball bearing is obtained based on Harries contact theory. Secondly, the thermal model of the motorized spindle is established and the steady-state temperature field of the motorized spindle is simulated by using ANSYS, and the influence of air-gap eccentricity on the temperature field of the motorized spindle is discussed. Finally, the circumferential temperature field distribution of the motorized spindle with the air-gap eccentricity is verified by experiment. The results show that the air-gap eccentricity has a significant influence on the non-uniform temperature field of the motorized spindle.

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Okuni, Ivan Moses, and Tracy Ellen Bradford. "Modelling of Elevated Temperature Performance of Adhesives Used in Cross Laminated Timber: An Application of ANSYS Mechanical 2020 R1 Structural Analysis Software." Environmental Sciences Proceedings 3, no. 1 (November 11, 2020): 46. http://dx.doi.org/10.3390/iecf2020-07902.

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There is difficulty in accurately modelling adhesive influence in structural performance of cross laminated timber (CLT), due to a lack of available knowledge on the heat performance of adhesives. Therefore, the main aim of this research was to evaluate the thermal and mechanical properties of adhesives used in production of engineered wood products like CLT. The properties of the timber species and the adhesive types used in the simulation were derived from published literature and handbooks. ANSYS mechanical 2020 R1 was employed because it has a provision for inserting the thermal condition and the temperature of the system set to the required one for analysis. The simulations were conducted for temperatures 20, 100, 140, 180, 220, and 260 °C, within which Zelinka et al. conducted their experiments, which have been the basis for the current study. The main findings were, the adhesive layer had little influence on the thermal properties of CLT composite (solid wood had the same thermal properties as CLT), but had a significant effect on the structural properties of CLT composite, the stresses and strains of the simulated wood species reduced with increase in temperature, the adhesives strengths at room temperature were greater than for solid wood at the same temperature and finally, the stresses and strains of the simulated wood adhesives reduced with increase in temperature. It is also important to note that computations for temperature distribution from the char layer were lower than computed using heat transfer equation, and the simulated values from steady state model. All in all, the objectives of this research were met and more research in thermal structural modelling using ANSYS should be conducted in the future.

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Jubear, Ass Prof Dr Abbas Jassem, and Ali Hameed Abd. "NUMERICAL STUDY FOR INTERRUPTED RECTANGULAR FINS IN A NATURAL CONVECTION FIELD." Al-Qadisiyah Journal for Engineering Sciences 11, no. 2 (January 29, 2019): 216–28. http://dx.doi.org/10.30772/qjes.v11i2.555.

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The heat sink with vertically rectangular interrupted fins investigated numerically in a natural convection field, and with steady-state heat transfer. Numerical study has been conducted using ANSYS Fluent software (R16.1) in order to develop a 3-D numerical model. The dimensions of fins are (305 mm length, 100 mm width, 17 mm height, and 9.5 mm space between fins). The number of fins used on the surface are eight. In this study, the heat input that is used as follow (20, 40, 60, 80, 100, and 120 watts). The study is focused on interrupted rectangular fins with different arrangement of fins. The results show that the addition of interruption fins in various arrangements will improve the thermal performance of the heat sink, and through the results, a better interruption rate obtained as an equation.

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Jubear, Abbas Jassem, and Ali Hameed Abd. "An Investigation of the Effect of interrupted fin arrangements on the Thermal Performance of a Heat Sink under a Free Convection Condition." Wasit Journal of Engineering Sciences 7, no. 1 (April 15, 2019): 43–53. http://dx.doi.org/10.31185/ejuow.vol7.iss1.113.

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The heat sink with vertically rectangular interrupted fins was investigated numerically in a natural convection field, with steady-state heat transfer. A numerical study has been conducted using ANSYS Fluent software (R16.1) in order to develop a 3-D numerical model. The dimensions of the fins are (305 mm length, 100 mm width, 17 mm height, and 9.5 mm space between fins. The number of fins used on the surface is eight. In this study, the heat input was used as follows: 20, 40, 60, 80, 100, and 120 watts. This study focused on interrupted rectangular fins with a different arrangement and angle of the fins. Results show that the addition of interruption in fins in various arrangements will improve the thermal performance of the heat sink, and through the results, a better interruption rate as an equation can be obtained.

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Khoirudin, Khoirudin. "OPTIMASI DESAIN PADA DINDING FURNACE DENGAN TEMPERATUR KERJA 1000 C." JURNAL KAJIAN TEKNIK MESIN 3, no. 1 (May 29, 2019): 1–8. http://dx.doi.org/10.52447/jktm.v3i1.1054.

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The aims of this research is to study and analysis on furnace walls with variation of hot face lining material types, variation of refractory material types, and variation of thickness of insulating materials to outer wall temperature at furnace with working temperature 1000 oC. This research uses a variety of hot face lining material in the form of ceramic fiber blanket with CR1260, CR1400, and CR1430, variations of refractory material in the form of refractory brick with the type NJM-20, NJM-23, and NJM-26, and using ROCKWOOL as an insulating material with a thickness variation of 50 mm, 75 mm, 100 mm. This research was simulated using Steady State Thermal ANSYS Mechanical (ANSYS Multiphysic) software. The result of the research shows the difference of the outer wall temperature value of the furnace. The highest wall temperature is in interaction with the wall without insulation, hot face lining material using CR1260, and NJM-26 as refractory material is 75.211 oC. While the lowest wall temperature is in the interaction of 100 mm thick insulation, hot face lining material using CR1430, NJM-20 as refractory material is 46.682 oC.

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Zhang, Zhong-Bin, C. Congyu, Yang Liu, and Li-Hua Cao. "A novel method for calculating effective thermal conductivity of particulate fouling." Thermal Science, no. 00 (2019): 308. http://dx.doi.org/10.2298/tsci190308308z.

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The accurate thermal conductivity of fouling plays a very significant role in designing heat exchanger. In this paper, a novel method of calculating the effective thermal conductivity (ETC) of particulate fouling is put forward by using Image-Pro-Plus image processing, the finite element method and ANSYS parametric design language (APDL). First of all, according to the analysis on the particulate fouling samples features, the particulate fouling is considered as porous media with fractal characteristics, whose microscopic network model is established using the finite element method, and each unit body material properties are randomly assigned by APDL. Secondly, ETC of particulate fouling model is calculated by the steady state plate method. And then, the influence of particulate fouling microstructure on ETC is explored. Last, it is also show that the calculation resulting of ETC agrees well with available experimental data and empirical correlation. Moreover, it has been shown that ETC of particulate fouling is closely associated with the porosity and pore size. The method can be used to research on the thermal conductivity of fouling, discuss the influence of microstructure on ETC of fouling, and provide the guidelines for designing of heat exchanger on calculating accurate thermal conductivity of fouling.

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Asiri*, Dr Saeed. "A Failure Mechanism Study of Boiler Water-Wall Tube using Numerical and Experimental Analysis." International Journal of Innovative Technology and Exploring Engineering 10, no. 10 (August 30, 2021): 64–74. http://dx.doi.org/10.35940/ijitee.j9434.08101021.

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The aim of this study is to investigate the boiler tube failure mechanism using finite element analysis and experimental Analysis. The numerical software used is ANSYS steady-state thermal and static structural analysis. The independent variable for the analysis is temperature from flue gas and wall thickness of boiler tube. The scope of the study is to determine the temperature distribution, von mises stress, deformation and safety factor by implemented design of experiment. The material of boiler tube sketch in two dimensional for simulation is SA210 Grade C. this is standard requirements for the boiler made of seamless medium-carbon steel with superheater tubes according to ASTM. From the result and discussion, the potential of failure mechanism will determine upon independent variables. In addition, hoop stress or circumference stress will help to support the statement of failure of boiler tube.

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Jiang, Min Feng, Xin Hua Song, Pin Li, Yang Hu, Kai Wang, Xiao Wang, and Hui Xia Liu. "Development of Numerical Model and Coupled Thermal/Mechanical Analysis in the Laser Transmission Joining of PET and Stainless Steel." Advanced Materials Research 291-294 (July 2011): 1381–88. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.1381.

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Laser transmission joining of dissimilar and biocompatible materials has potential applications in biomedical implants. In this work, a three-dimensional (3D) transient model for sequentially coupled thermal/mechanical analysis of laser transmission joining of 0.1mm thick PET film and 0.1mm stainless steel has been developed by using the ANSYS parametric design language APLD, along with a moving Gaussian laser heat source. It can be calculated how long it takes to reach the quasi-steady state through the stimulation of the temperature field. The calculated values of the joint width are in good agreement with the experimental results by comparison under conditions of different parameters, which indicates that the model is reliable and is helpful for optimizing process parameters. Then based on the temperature field, the residual stress field distribution on both PET and stainless steel surface is achieved by applying the indirect coupling methods to the analysis. this study also has laid a theoretical foundation for improving the stress distribution on the joint.

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46

Shah, Vyom, Darshita Shah, and Dhaval B. Shah. "Thermo-Mechanical Analysis of Functionally Graded Material Plate under Transverse Loading for Varying Volume Gradation." Advanced Materials Research 1155 (August 2019): 81–88. http://dx.doi.org/10.4028/www.scientific.net/amr.1155.81.

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Functionally graded material (FGM) has a unique design in which material properties vary smoothly and continuously which leads to having better thermal and mechanical performance. Functionally graded material has a wide area of application from the pressure vessel to aerospace due to its tailoring properties. The main emphasis has been made here, to present a structural mechanical and steady-state thermal analysis of functionally graded flat plate made up of aluminum and ceramic. The flat plate is subjected to various boundary and loading condition. Material properties of FGM is calculated across the thickness using power law with the help of MATLAB programming. An analysis is performed for various volume gradation using MACROS in ANSYS APDL. The analysis results for functionally graded materials are compared with a composite sandwich plate for the same boundary conditions. It was found that von-Mises stress generated in FGM is 14.6% less than compared to sandwich structure, the stress in x and y-direction is 16.5% less, XY-Shear is 13.5% less and deflection is 33% less than a sandwich plate of aluminum and ceramic.

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Ong, K. A., and Mohd Zulkifly Abdullah. "An Analytical Convergence Study of the Forced Air Cooling in Electronic Packaging." Applied Mechanics and Materials 819 (January 2016): 34–41. http://dx.doi.org/10.4028/www.scientific.net/amm.819.34.

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A forced air thermal cooling model has been developed by using Ansys software, to study at each step of the input power, what will be the corresponding junction temperature? Few approaches were used to ensure the accuracy of the thermal simulation method, ranging from the minimum number of simulation iterations required in the finite element analysis, to the residuals target in terms of the momentum, continuity and energy equations, the objective is to ensure the simulations are converged and provide the reasonable results, which is also an indication of how the partial equations have successfully been solved with analytic method. The thermal resistance network in the model has also been established, mainly to understand the next level details in this thermal model by analyzing the correlation between the air flow and the thermal resistance at each junction, and also to understand the effect of the air flow with respect to the total thermal resistance. The thermal analytic model that built has proven to be healthy and it requires 200 iterations to achieve steady state with the reasonable temperature output, and there is no convergence issue in which the continuity, momentum and energy graphs showed the healthy trend, it achieved 10-7 for continuity, energy and momentum equations. it shows that when the air flow reduces the overall thermal resistance increases, in other word, reducing the air flow will increase the thermal resistance

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Devireddy, Siva Bhaskara Rao, and Sandhyarani Biswas. "Effect of Fiber Geometry and Representative Volume Element on Elastic and Thermal Properties of Unidirectional Fiber-Reinforced Composites." Journal of Composites 2014 (November 18, 2014): 1–12. http://dx.doi.org/10.1155/2014/629175.

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The aim of present work is focused on the evaluation of elastic and thermal properties of unidirectional fiber-reinforced polymer composites with different volume fractions of fiber up to 0.7 using micromechanical approach. Two ways for calculating the material properties, that is, analytical and numerical approaches, were presented. In numerical approach, finite element analysis was used to evaluate the elastic modulus and thermal conductivity of composite from the constituent material properties. The finite element model based on three-dimensional micromechanical representative volume element (RVE) with a square and hexagonal packing geometry was implemented by using finite element code ANSYS. Circular cross section of fiber and square cross section of fiber were considered to develop RVE. The periodic boundary conditions are applied to the RVE to calculate elastic modulus of composite. The steady state heat transfer simulations were performed in thermal analysis to calculate thermal conductivity of composite. In analytical approach, the elastic modulus is calculated by rule of mixture, Halpin-Tsai model, and periodic microstructure. Thermal conductivity is calculated analytically by using rule of mixture, the Chawla model, and the Hashin model. The material properties obtained using finite element techniques were compared with different analytical methods and good agreement was achieved. The results are affected by a number of parameters such as volume fraction of the fibers, geometry of fiber, and RVE.

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Cerdoun, Mahfoudh, Carlo Carcasci, and Adel Ghenaiet. "Analysis of unsteady heat transfer of internal combustion engines’ exhaust valves." International Journal of Engine Research 19, no. 6 (August 22, 2017): 613–30. http://dx.doi.org/10.1177/1468087417725221.

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This study is concerned with the analyses of heat transfer through an exhaust valve considering the real unsteady effects during the cycle of an internal combustion engine and to identify the factors and parameters affecting the heat transfer. The valve is segmented into several zones to facilitate incorporating the boundary conditions and evaluating the heat transfer coefficient and the adiabatic wall temperature based on the finite element method. The unsteady simulations were carried out using ANSYS-APDL for the proposed thermal model. The effect of lubricating oil and the contact resistance between guide and engine block and the thermal contact between exhaust valve and seat are included, as well as the differential displacement of both the guide and engine block walls due to high working temperature. The averaged values of heat transfer coefficient and adiabatic wall temperature used in the boundary conditions are shown to underestimate the temperature maps. The cyclic boundary conditions required more run time to reach the steady state and allowed better monitoring of the thermal process. The thermal contact resistance has the main contribution in the zone of valve-seat, whereas the resistance of oil film between the guide and stem valve is shown to affect mainly heat transfer coefficient. The obtained maps of temperature reveal the locations of maximum temperatures in the exhaust valve.

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Paul, Amlan, and Debabrata Das. "A study on non-linear post-buckling behavior of tapered Timoshenko beam made of functionally graded material under in-plane thermal loadings." Journal of Strain Analysis for Engineering Design 52, no. 1 (October 7, 2016): 45–56. http://dx.doi.org/10.1177/0309324716671857.

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In the present work, the non-linear post-buckling load–deflection behavior of tapered functionally graded material beam is studied for different in-plane thermal loadings. Two different thermal loadings are considered. The first one is due to the uniform temperature rise and the second one is due to the steady-state heat conduction across the beam thickness leading to non-uniform temperature rise. The governing equations are derived using the principle of minimum total potential energy employing Timoshenko beam theory. The solution is obtained by approximating the displacement fields following Ritz method. Geometric non-linearity for large post-buckling behavior is considered using von Kármán type non-linear strain-displacement relationship. Stainless steel/silicon nitride functionally graded material beam is considered with temperature-dependent material properties. The validation of the present work is successfully performed using finite element software ANSYS and using the available result in the literature. The post-buckling load–deflection behavior in non-dimensional plane is presented for different taperness parameters and also for different volume fraction indices. Normalized transverse deflection fields are presented showing the shift of the point of maximum deflection for various deflection levels. The results are new of its kind and establish benchmark for studying non-linear thermo-mechanical behavior of tapered functionally graded material beam.

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Journal articles on the topic 'Ansys Steady State Thermal'

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