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Zhou, Chen Quan, Ji Yu, Dan Shen, Zheng Peng Xia i Ping Liao. "Analysis and Optimization of Marine Pumps Take-Off and Landing Platform Based on ANSYS". Applied Mechanics and Materials 455 (listopad 2013): 544–50. http://dx.doi.org/10.4028/www.scientific.net/amm.455.544.
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Marine pumps take-off and landing platform is one of the important parts on the dredger, with its high performance, high benefit, make the pump under complex conditions running steadily, work safely and reliably, to ensure that the concentration of desilting. Its finite element model was established by applying the software ANSYS, the static analysis and buckling analysis of the model was carried out, the bench structure was improved according to the results of the analysis, in order to predict the performance of the work at the design stage, and provide theoretical basis for structure optimization design platform.
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Patil, Kedar Kishor, Vinit Randive, Sahil Mulla i Rajkumar Parit. "Design and Analysis of Single Plate Clutch by Mathematical Modelling and Simulation". International Journal of Advance Research and Innovation 8, nr 3 (2020): 53–62. http://dx.doi.org/10.51976/ijari.832009.
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This paper addresses Modeling and analysis of single plate clutch which is used in Tata Sumo vehicle. Clutch is the most significant component located between engine and gear box in automobiles. The static and dynamic analysis were developed for a clutch plate by using finite element analysis (FEA). The 3D solid model was done using CATIA V5R16 version and imported to ANSYS work bench 19.0 for structural, thermal and modal analysis. The mathematical modelling was also done using six different materials (i.e. Steel, Stainless Steel, Ceramics, Kevlar, Aluminum alloy and Gray Cast iron); then, by observing the results, comparison was carryout for materials to validate better lining material for single plate clutches using ANSYS workbench 19.0 and finally conclusion was made.
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Lisowski, Edward, Grzegorz Filo, Piotr Pluskowski i Janusz Rajda. "Flow Analysis of a Novel, Three-Way Cartridge Flow Control Valve". Applied Sciences 13, nr 6 (14.03.2023): 3719. http://dx.doi.org/10.3390/app13063719.
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Flow control valves are designed to maintain a constant flow rate regardless of pressure changes. However, standard, two-way design may cause significant energy losses due to the need to maintain high pressure in the supply line. In contrast, the proposed three-way valve allows the required flow rate to be obtained at a supply pressure slightly above the loading pressure. This work included building mathematical and simulation models, conducting numerical simulations in Ansys/Fluent and Matlab/Simulink environments, and verifying the results by initial test bench experiments on a valve prototype. The main contribution provided by the work concerns the proposal of a new valve solution and the estimation of its operational characteristics.
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Zhang, Feng Shou, Don Gyan Wang, Jian Ting Liu i Feng Kui Cui. "Thermal Deformation Analysis for the Guideway of Large-Type CNC Lathe Based on Finite Element Method". Applied Mechanics and Materials 58-60 (czerwiec 2011): 198–204. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.198.
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Friction between the guideway and the bench of large-type CNC lathe will cause thermal deformation of the guideway, which causes processing error of the lathe，thereby reduces machining precision of the workpiece. The authors establish the mathematical model of temperature field and thermal deformation of the guideway in the work process, numerically simulate the guideway thermal characteristics by ANSYS finite element analysis software, and obtain the distribution regularities of temperature field and thermal deformation and their major influencing factors, which provide a theoretical basis for optimizing design and thermal error compensation design of the lathe guideway.
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Wong, Pak Kin, Zheng Chao Xie, Yu Cong Cao i Ming Li. "Design and Optimization on Active Engine Mounting Systems for Vibration Isolation". Applied Mechanics and Materials 479-480 (grudzień 2013): 202–9. http://dx.doi.org/10.4028/www.scientific.net/amm.479-480.202.
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In this paper, based on the previous research experiences in the lumped parameter modeling and study of active control mounts model, a test bench model of ACM in powertrain is described and the vibration model is implemented in MATLAB. In order to validate the implementation of the state equations in this work, a finite element analysis (FEA) method is used in ANSYS and compared with analytical model for validate. After the validation, the control strategy is integrated into the analytical model by using the linear quadratic regulator (LQR) method, which is a well know design technique that provides practical feedback gains. Furthermore, this work examines the application of genetic algorithms (GA) in optimizing the weight matrices of LQR. Finally, this work will be useful in improved prediction and performance of vehicle NVH.
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Radha Krishnan, B., i M. Ramesh. "Experimental Evaluation of Al-Zn-Al2O3 Composite on Piston Analysis by CAE Tools". Mechanics and Mechanical Engineering 23, nr 1 (10.07.2019): 212–17. http://dx.doi.org/10.2478/mme-2019-0028.
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Abstract Today’s automotive designers and material specialists regard lighter vehicles for less fuel consumption (economy and ecology) and higher safety to passengers. Metal matrix composites have been a large area of interest. Aluminium composite is potentially applied in automotive and aerospace industries, because it has a superior strength to weight ratio and is a light weight metal with high temperature resistance. Composites containing hard oxides and ceramics (such as alumina) are preferred for high wear resistance along with increased hardness. In this work, alumina and zinc are reinforced in Al-LM25 alloy through stir casting process, where alumina is varied 6% and 12% in Al-5%Zn. Various mechanical analyses were conducted and the effect of wear with different percentage of alumina reinforcement was studied. The resulting properties are imported in a piston, modelled using solid works, and analysed in ANSYS work bench. Imparting this new material for pistons could introduce deep design and improvements in engine operation of a vehicle.
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Bakri, Badis, Hani Benguesmia, Ahmed Ketata, Slah Driss i Zied Driss. "Prediction of the Unsteady Turbulent Flow in a Solar Air Heater Test Bench". Modelling, Measurement and Control B 89, nr 1-4 (31.12.2020): 7–13. http://dx.doi.org/10.18280/mmc_b.891-402.
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In this work, the unsteady turbulent flow in a new solar air heater test bench, developed in our LASEM laboratory, was predicted. The considered system consists of two passages solar air heater separated by an absorber and powered by a fan working in a delivery mode, placed in the hole inlet side the insulation. On this system, a glass is hanging on the front side and an absorber is inserted inside. On the glass side, it is connected to the box prototype through a pipe. The hot air flow is routed towards the box prototype. Two circular holes, are located in the same face of the box prototype. The inlet hole allows the hot air supply. However, the outlet hole allows its escape into the ambient environment. By using the ANSYS Fluent 17.0 software, the Navier-Stokes equations coupled with the standard k-ω turbulence model were resolved. The numerical results were compared with our experimental data, established in the second passage of the solar air heater test bench. The good agreement confirms the validity of the numerical method. The range of temperatures is very useful in many applications such as industrial and domestic applications.
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Subbarao, Rayapati, i Nityanando Mahato. "Simulation studies on the comparison of different superalloys used in gas turbine blades". IOP Conference Series: Materials Science and Engineering 1248, nr 1 (1.07.2022): 012034. http://dx.doi.org/10.1088/1757-899x/1248/1/012034.
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Abstract Impingement of gases at high temperature and pressure leads to the development of stresses and deformation in gas turbine blades. Other important characteristics are also getting changed, prompting more problems in gas turbine engines, as they are used in both power generation and transportation. In this work, failure aspects in blades is studied by performing structural analysis, considering superalloys that are used in the industry. Software packages like Solidworks and Ansys are used for modelling, meshing and solving, in order to identify the target variables like total deformation, von Mises stress, strain energy and fatigue. Geomtery of the turbine blade is modelled and after meshing, boundary conditions like pressure, force and rotational speed are enforced. Results are analysed after carrying out the static structural analysis in Ansys work bench. For the superalloy materials chosen, contours and plots are made for all the configurations. Validation of deformation from the present work is done with experiments done earlier, which is in good agreement. Total deformation is more at the tip of the blade. At the root of the blade, the stresses are found to be more. Presence of strain energy is more near the root. Fatigue life contours showed similarity in all the cases. The blade failure region is identified for all the materials under consideration and the trends are compared for different input temperatures. Thus the current work is helpful in recognizing appropriate superalloy to be used in the present day gas turbines and supports the use of GTD 111 as gas turbine blade material.
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Shi, Yalin, Lingling Chen, Pengfei Chen, Qingzhen Yang, Yongqiang Shi i Hua Yang. "Numerical Study On Aerodynamic Characteristics Of Supersonic Nozzle In Presence Of Ground Effect". Journal of Physics: Conference Series 2252, nr 1 (1.04.2022): 012013. http://dx.doi.org/10.1088/1742-6596/2252/1/012013.
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Abstract The aeroengine mobile test bench is well applied as it is convenient for outfield transportation and installation, and also it is suitable for different environments. When utilizing a mobile test bench, the distance between the center of the engine and the ground is normally within a range so that it can be manually operated. However, this limited distance will lead to the ground effect, which affects the test performance of the aeroengine. This paper numerically studies the aerodynamic characteristics of a supersonic nozzle in the presence of the ground effect. The work is conducted with the software package ANSYS Fluent 21, employing the unsteady large eddy simulation. The nozzle works in a supersonic condition, and the distance between the nozzle and the ground is 2Dj. Dj is the diameter of the nozzle outlet. The models with and without ground effect are investigated. The analysis of the flow field confirms that the ground effect enhances the mixing of the jet and the air, and enriches the coherent structure. With the ground effect, the Reynolds stress on the vertical centerline on each section plane is increased, and the shear layer on each section plane is expanded radially. The results show that the ground effect increases the ground temperature after x/Dj=9, shortens the length of the core area by about 12.5%, decreases the mean axial velocity on the centerline of the jet after x/Dj=10, and increases the dimensionless velocity on the near ground side of the vertical plane. Here, x is the distance between the inlet plane and the discussed cross section. The analysis of the thrust characteristics confirms that the ground effect has no influence on the thrust. Therefore, the mobile test bench can accurately evaluate the thrust performance of an aeroengine.
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Shi, Yalin, Lingling Chen, Pengfei Chen, Qingzhen Yang, Yongqiang Shi i Hua Yang. "Numerical Study On Aerodynamic Characteristics Of Supersonic Nozzle In Presence Of Ground Effect". Journal of Physics: Conference Series 2252, nr 1 (1.04.2022): 012013. http://dx.doi.org/10.1088/1742-6596/2252/1/012013.
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Abstract The aeroengine mobile test bench is well applied as it is convenient for outfield transportation and installation, and also it is suitable for different environments. When utilizing a mobile test bench, the distance between the center of the engine and the ground is normally within a range so that it can be manually operated. However, this limited distance will lead to the ground effect, which affects the test performance of the aeroengine. This paper numerically studies the aerodynamic characteristics of a supersonic nozzle in the presence of the ground effect. The work is conducted with the software package ANSYS Fluent 21, employing the unsteady large eddy simulation. The nozzle works in a supersonic condition, and the distance between the nozzle and the ground is 2Dj. Dj is the diameter of the nozzle outlet. The models with and without ground effect are investigated. The analysis of the flow field confirms that the ground effect enhances the mixing of the jet and the air, and enriches the coherent structure. With the ground effect, the Reynolds stress on the vertical centerline on each section plane is increased, and the shear layer on each section plane is expanded radially. The results show that the ground effect increases the ground temperature after x/Dj=9, shortens the length of the core area by about 12.5%, decreases the mean axial velocity on the centerline of the jet after x/Dj=10, and increases the dimensionless velocity on the near ground side of the vertical plane. Here, x is the distance between the inlet plane and the discussed cross section. The analysis of the thrust characteristics confirms that the ground effect has no influence on the thrust. Therefore, the mobile test bench can accurately evaluate the thrust performance of an aeroengine.
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Гребеников, А. Г., И. В. Малков, С. П. Светличный, И. Н. Москаленко i О. Ю. Кривых. "МЕТОД ПІДТВЕРДЖЕННЯ РЕСУРСНИХ ХАРАКТЕРИСТИК МЕТАЛЕВОЇ ЛОПАТІ НЕСУЧОГО ГВИНТА ВЕРТОЛЬОТА ЗА РЕЗУЛЬТАТАМИ ВИПРОБУВАНЬ". Open Information and Computer Integrated Technologies, nr 96 (23.02.2023): 34–96. http://dx.doi.org/10.32620/oikit.2022.96.03.
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The helicopter main rotor blade is the basic product that determines the reliability and service life of the helicopter as a whole. The problem of predicting and ensuring the specified blade life is an urgent problem considered at the stage of its design. The analysis of the design, structural materials and design and technological solutions of the main rotor blade (RB) of the Mi-8 helicopter has been carried out. A brief description of the main rotor blade of the Mi-8 helicopter is presented. The analysis was carried out and a standard flight cycle (SFC) of the helicopter was developed. The type of bench equipment for carrying out bench fatigue tests of the blade has been selected and justified. The loads on the main rotor blade for the SFC are determined. To determine the fatigue life of a blade, it is necessary to know the characteristics of the stress-strain state. The calculation of the stress-strain state (SSS) of a blade by the finite element method (FEM) using the ANSYS system is presented. The characteristics of the stress-strain state of the spar of the regular and irregular parts of the rotor blade of a helicopter are determined using the ANSYS system. The use of numerical methods for calculating the characteristics of the stress-strain state can significantly reduce the time and cost of designing a blade. The paper presents the results of calculating the regular part of the main rotor blade of the Mi-8 helicopter in the hover mode in the case of its loading with aerodynamic and inertial load from rotation, as well as the force from its own weight. With the help of the ANSYS system, a finite element model of the regular part of the blade was developed, consisting of a set of beam elements of variable section, a calculation was carried out taking into account the geometric nonlinearity of the structure's behavior, and an analysis of the results obtained was carried out. To describe the response of materials to an external action, a model of an elastically deformable isotropic body was used with the assignment of the corresponding elastic constants of the material. The analysis of the calculation results includes the determination of reactions at the attachment points, the values of the maximum displacements of structural elements and stresses in dangerous sections. Dangerous sections are determined and the values of the longitudinal force and bending moment in these sections are calculated. The assessment of the static strength of the blade by the safety factor was carried out. When evaluating the static strength, the equivalent stresses according to Mises were considered as the maximum design stresses. To assess the fatigue strength, we analyzed the distribution of the main tensile stresses in the power elements over typical stress concentrators. The maximum level of the main tensile stresses in the dangerous section indicates that the blade material operates in the zone of high-cycle fatigue. A technique for calibrating strain gauge channels has been developed. The calculation of the characteristics of the rotor blade of a helicopter is based on the requirements set forth in the technical literature, regulatory documents. When performing work, the requirements of the Aviation Rules, Part 29 (AP - 29) were taken into account. These studies were the basis for the development of a method for confirming the resource characteristics of a helicopter main rotor blade based on the results of flight and bench tests.
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Lal, Manendra Kumar. "Fatigue Analysis of Front Axle for Automobile Heavy Motor Vehicle". International Journal for Research in Applied Science and Engineering Technology 11, nr 4 (30.04.2023): 2757–67. http://dx.doi.org/10.22214/ijraset.2023.50660.
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Abstract: The axles in a system must bear the weight of the vehicle as well as any cargo weight. The front axle beam is one of the major parts of vehicle suspension system and it houses the steering assembly as well. About 35 to 40 percent of the total vehicle weight is taken up by the front axle. Corrosion, wear and fatigue are the main causes of failure of mechanical parts. Main failure form of front axle beam is fatigue damage. The axles serve to transmit driving torque to the wheel, as well as to maintain the position of the wheels relative to each other and to the vehicle body. Therefore, the research on the fatigue life has important value. So, proper design and optimization of front axle is extremely crucial to Fatigue strength. The paper focuses on design, analysis and optimization of front axle. The approach in this research paper has been divided into two steps. The First step involves design of front axle by Analytical method. For this, types of forces loads with the help of CAD UNIGRAPHICS NX9.Second step involved further Pre-processing using ANSYS bench work 15.0 and post
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Willberg, Christian, Rakesh Ravi, Johannes Rieke i Falk Heinecke. "Validation of a 20 m Wind Turbine Blade Model". Energies 14, nr 9 (25.04.2021): 2451. http://dx.doi.org/10.3390/en14092451.
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In the projects Smartblades and Smartblades 2 a full-scale 20 m rotor blade for the NREL CART3 wind turbine was designed, built and tested. The rotor blade was intended to have a strong bending–torsion coupling. By means of the experiments, the proof for the technology in question was supposed to be provided. The experimental work was accompanied by simulations. The aim of the paper was to describe and publish a reference finite element model for the 20 m rotor blade. The validation procedure is presented, as are the modelling strategy and the limitations of the model. The finite element model is created using quadratic finite shell elements and quadratic solid elements. Different data sets were used for the validation. First, the data of static test bench experiments were used. The validation comprised the comparison of global displacement and local strain measurements for various flap and edge bending tests and for torsion unit loading tests. Second, the blades’ eigenfrequencies and eigenvectors in clamped and free–free scenarios were used for validation. Third, the mass distributions of the finite element and real blade were investigated. The paper provides the evaluated experimental data, and all analysed scenarios and the corresponding finite element models in Abaqus, Ansys and Nastran and formats as a reference dataset.
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Santoro, Daniele, Michele Nardi, Fabio Lasorella i Cristina Bignardi. "Overlapping Versus “Kissing” Plates in Femur: A FEM Study". Open Biomedical Engineering Journal 13, nr 1 (17.12.2019): 94–101. http://dx.doi.org/10.2174/1874120701913010094.
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Introduction: The progressively aging population makes higher the probability of operate fractures in patients who have underwent past long bones fixation. Surgeons may consider not to remove the past implant because of poor bone quality and low life expectancy, but attention must be paid to avoid the origin of new dangerous stresses. There is still a lack of evidence in determining which is the best relation between a plate already implanted in the past and a new fixation device. Objective: The purpose of this study was to investigate how the bone-implant stress distribution changes with two different plate configurations: overlapped (the tip of new plate covering part of the old one) versus “kissing” (the tips of the plates in close contact). This study was based on a finite element analysis by means of Rhinoceros® and Ansys Work bench software programs. In order to reduce confusing factors, the femur was considered to be not fractured. Materials & Methods: Different features have been tested: bone quality, plate materials, and plate configurations. The study was conducted by evaluating stress values in different femur sections. The same parameters were evaluated in a femur without plates. Three phases of gait were simulated: Heel-strike, midstance, and toe-off. Results: Heel-strike phase has shown to reach the highest stresses. In general, stresses are lower in the overlapping plates configuration when compared to the “kissing” plates one. Conlusion: The main evidence shown in this study is that, in silico, the overlapped configuration can decrease the stress under the plates intersection, without increasing the stress shielding.
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Грешта, Виктор Леонидович, Дмитрий Викторович Павленко, Ярослав Викторович Двирнык i Дарья Владимировна Ткач. "РАСЧЕТНО-ЭКСПЕРИМЕНТАЛЬНАЯ МЕТОДИКА ОПРЕДЕЛЕНИЯ ДИНАМИЧЕСКОГО МОДУЛЯ УПРУГОСТИ ПРИРАБАТЫВАЕМЫХ УПЛОТНИТЕЛЬНЫХ ПОКРЫТИЙ ТУРБИН ГТД". Aerospace technic and technology, nr 8 (31.08.2019): 105–13. http://dx.doi.org/10.32620/aktt.2019.8.16.
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The aim of the work was the development and testing of a method for determining the dynamic modulus of elasticity of running-in sealing gasket coatings for GTE turbines. Many contradictory requirements are put forward to these coatings, therefore, to satisfy them, it was proposed to apply coatings with variable properties at various stages of the life cycle of gas turbine engines. However, the development of new coatings requires a variety of mechanical tests, including to evaluate the dynamic modulus of elasticity. The porous structure and, accordingly, the low strength of the developed coatings do not allow the use of standard methods for the evaluation of mechanical properties, so there is a need to develop a special method for determining the elastic modulus. In the course of the study, the finite element method, statistical methods, experimental methods for determining the natural frequency of oscillations were applied. Investigations were carried out for running-in sealing coating of the stator of turbines of gas turbine engines KNA-82 + CoNiCrAlY. The numerical experiment was performed in the Ansys Work-bench 2019 R2 software package. Since coatings are used at elevated temperatures, it was necessary to estimate the modulus of elasticity at various temperatures, which required additional studies of temperature-dependent properties that affect the desired value. As a result of the implementation of the plan of a numerical experiment to determine the frequency of natural oscillations of samples with a coating while varying its elastic modulus and temperature, as well as solving the inverse problem of establishing the dependence of the dynamic elastic modulus on the natural oscillation frequency of a coated sample, we developed a calculation and experimental method for determining the dynamic modulus elasticity of running-in sealing coatings of GTE turbines. The developed technique is used to determine the dynamic modulus of elasticity of running-in coatings of different chemical composition and structure in the range of operating temperatures, which can be used to optimize their composition, structure, and properties.
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Zaides, S. A., i Huu Hai Nguyen. "Intensification of stress state at deformation site under local action of a deformation tool". iPolytech Journal 26, nr 4 (29.12.2022): 580–92. http://dx.doi.org/10.21285/1814-3520-2022-4-580-592.
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This paper discusses the development of a new procedure for finishing and hardening treatment by changing the kinematics of a deformation tool having a double-radius shape of the profile of the working surface, along with the determination of the stress-strain state in the site of elastic-plastic deformation and residual stresses in the hardened zone of the surface layer. The SOLIDWORKS 2018 software for 3D design and the ANSYS Work-bench 19.1 soft-ware using the finite element method were used to build a mathematical model of local loading. The temporary and residual stresses, the strain state in the loading zone, the depth of the plastic layer and the maximum value of the relative plastic deformation under various loading procedures of the working tool were determined. It was established that, at the reversible rotation of a double-radius roller, the values of temporary stresses are over 15% higher compared to those during static hardening, while the residual stresses are 5.7% higher. With the reversible rotation of the double-radius roll-er, the value of the maximum strain intensity becomes 2.11 times higher than that during static hardening. The intensity of the maximum residual stresses during the reverse rotation of the double-radius roller occurs at a depth 3 times greater than the indentation of the double-radius roller, rather than on the surface of the sample. The results of computer model-ling and numerical calculations indicate that the procedure of reversible rotation of a toroidal double-radius roller has the greatest influence on the intensity of the stress state in the deformation site, while the procedure of static hardening by a single-radius roller has the least impact. The obtained results suggest that the proposed technological process of surface plastic deformation based on the reversible rotation of the working tool will allow the radial tension to be reduced while maintaining the high quality of the surface layer of machine parts.
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Servin-Castañeda, Rumualdo, Sixtos Antonio Arreola-Villa, Alejandro Perez-Alvarado, Ismael Calderón-Ramos, Ruben Torres-Gonzalez i Alonso Martinez-Hurtado. "Influence of Work Hardening on the Surface of Backup Rolls for a 4-High Rolling Mill Fractured during Rolling Campaign". Materials 15, nr 10 (13.05.2022): 3524. http://dx.doi.org/10.3390/ma15103524.
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Backup rolls are the main tool in a four-high rolling mill; the rolling forces applied in load cells promote the fatigue of the material due to mechanical contact between backup rolls and work rolls. This work investigated the causes of recurrent failures in backup rolls, with cracking always initiated on the surface of the roll body and finishing in the main radius between neck and roll body. Aiming to find the causes of failure, visual inspection and morphology of the fracture were performed, complemented with mechanical tests of hardness on the stress concentration area, in addition to validating the results by applying the finite element method, using ANSYS Mechanical Static Structural Software. It was concluded that the fatigue crack initiated on the surface of BUR due to work hardening continued growing up over the fatigued material, creating beach marks, and finally, a fracture occurred in the main radius of BUR due to stress concentration. The work hardening is the main cause of spalling on BURs and other mechanical components exposed to mechanical contact.
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Salakhov, Rishat, Andrey Ermakov i Elvira Gabdulkhakova. "Numerical and Experimental Study of the Impeller of a Liquid Pump of a Truck Cooling System and the Development of a New Open-Type Impeller". Tehnički glasnik 14, nr 2 (11.06.2020): 135–42. http://dx.doi.org/10.31803/tg-20200309115417.
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Typically, closed-type impellers are more efficient than open-type impellers, but in the manufacture of closed-type impellers, cost of wheels is higher. This paper describes the development of cost-effective and simple impeller wheel for a fluid pump in the truck cooling system. To perform this task, the numerical computations of a standard impeller wheel were carried out, its characteristics were also obtained from a test bench, the standard impeller wheel model was verified. The open-type impeller wheel was developed according to the current dimensions of standard impeller wheel and then analyzed with the numerical computations by the software ANSYS CFX (Academic license) computational fluid dynamics. The developed open-type impeller wheel works very effectively in spite of performance degradation by 5% in comparison to the closed-type impeller wheel. When working as a part of engine, the pump efficiency is 0.552-0.579. The maximum value of the pump efficiency is 0.579, it can be achieved at the highest speed of the pump (4,548 rpm and 655 l/min).
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Guo, Fulai, i Chengning Zhang. "Oil-Cooling Method of the Permanent Magnet Synchronous Motor for Electric Vehicle". Energies 12, nr 15 (2.08.2019): 2984. http://dx.doi.org/10.3390/en12152984.
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The typical motor has poor heat dissipation conditions that are limited by the installation space and working environment, and the high operation temperature increase has been a bottleneck to improve the power density and torque density. The inner rotor motor is considered to be the research object, and an oil-cooling structure for end winding and stator core is proposed. The heat inside the motor is mainly carried away through the lubricating oil in the form of heat conduction and convection heat transfer. The 3d motor model was built using the ANSYS software. The temperature field of the motor was simulated to analyze the temperature distribution inside the motor under rated and peak working conditions. The low-speed high-torque test and one-hour temperature-rise test of the motor prototype were performed on a bench built in the laboratory. The comparison between the test results with water-cooled motor shows that the temperature-rise rate of oil-cooled motor with the same electromagnetic structure is slower than that of water-jacketed cooled motor, and the temperature difference between the front and back of the motor decreases by 18 °C in half an hour. The oil-cooled method has a good cooling effect on the stator core and works for longer time under rated conditions.
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"Columns with Different Cross Section using ANSYS Work Bench". International Journal of Innovative Technology and Exploring Engineering 9, nr 2S4 (31.12.2019): 469–73. http://dx.doi.org/10.35940/ijitee.b1215.1292s419.
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In this paper we are going to analyze the strength of material and deflection due to applying load on the column. The column of different materials will be cross sectioned and will present the difference of strength of materials by ANSYS workbench. The strength of material will depend upon the young’s modulus and moment of inertia of the metal plate. We use different size of metal plates such as I-section, circular bar, rectangular bar and square bar for a specific material to know the strength of material when a load applied on the cross sections. In this paper we taken a condition that one side of column is fixed and another side is free when load is applying on the column.
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"Structural & Thermal Analysis of the Dental Refurbishment Ingredients using FEA Application". International Journal of Innovative Technology and Exploring Engineering 8, nr 12S (26.12.2019): 187–91. http://dx.doi.org/10.35940/ijitee.l1055.10812s19.
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Very little scientific information on dental renewables has recently been available. Before this experience, the utilization of these materials was entirely artistic, and the patient's mouth was the only testing laboratory. Today, despite the advanced technical devices and the improvement of consistent test methods for estimating the metallic and thermal properties of renewables, this test sometimes happens on the patient's mouth. The current work has considered, and compared, basic thermal & mechanical characteristic’s of some of the most commonly used restorative materials. The transport of these materials when they were used as a class I cup, mandibular 1st molar, was mixed under different thermal and structural strengths examining the use of ANSYS/work bench 15.0. Consideration was given to Amalgam materials, Composite/mixture, & gold alloy for this effort. The outcomes obtained from ANSYS indicated that the biggest update at the occlusal surface, particularly in the inflection, occurred and is rising to the other four (mesial, & buccal, & lingual & distal surfaces) characteristics & the roots, though Von-Mises was depicted on the cervical line/mark (a border between crown and roots) and spread to both crown & roots. There were 35 tests carried out and the values for the highest separation and von-Mises emphasis both against temperature and structure by using QTIPLOT software, and the final result shows that all values are the highest and highest concentrations of both re-fillers of gold and the mixed nutrients and of both deformation & von-Mises stresses respectively.
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Kumar, Alok, Dr Ajay Singh i Prof Ashish Verma. "Thermal Analysis of Extended surfaces from the Heat sink of Different shape - A Brief Review". International Journal of Scientific Research in Science, Engineering and Technology, 23.10.2021, 285–92. http://dx.doi.org/10.32628/ijsrset218540.
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This paper introduces a brief review about the way of heat extraction enhancement from heat sink using fins of different types and different shapes and also with different shape of perforation. Extended surfaces from the base plate or heat sink is nothing but they are FINS. There are various types of fin exits. They are Rectangular, Square, Annular, Elliptical, Cylindrical or Pin fin which is utilized with different geometrical combinations. To achieve maximum temperature droop from the base surface or heat sink by using fins numerous trials are completed or being carried out for designing optimized Fin. The optimization of Fin can be achieved by increasing surface contact area with the atmospheric air. In these days there are numbers of experiment is done on fins like Solid fin, Porous fins and Solid fins with perforation, has also been brought off. The various design modifications which are implemented and studied analytically and experimentally by the researchers using ANSYS Work bench is been discussed in this review paper.
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Belsare, Rohit S., Avinash Badadhe i Subim Khan. "Self-Locking Hydrostatic Differential for Automated Agriculture Spray Vehicle". International Journal of Engineering Sciences 14, nr 1 (2021). http://dx.doi.org/10.36224/ijes.140103.
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The differential is an important part of the automobile transaxle. The purpose of the differential is to distribute power to the two rear wheels and provide differential speed to the vehicle wheels when the vehicle takes a turn. Conventional differentials although provide the differential speeds but fails to prevent slip of the differential. In vehicles for application in agriculture it is essential to have differential locking due to slippery conditions hence a differential locking system is needed. Limited slip differentials are available but they are very costly and also they do not offer complete differential locking. Present solutions available in market are either too primitive where in the driver has to get down from the vehicle and then lock the differential or they are very sophisticated in the form of E-locker from EATON which is very costly to implement in commercial vehicles. The project work aims at design development of self-locking differential locking system for an automated agriculture vehicle where in the differential drive and the locking arrangement will be both hydraulically operated. The components will be designed used Unigraphix software and the analysis of the components will be done using Ansys work bench. Further the developed hydrostatic differential model will be tested to determine the performance characteristics of the drive.
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"CFD Simulation of Velocity and Temperature Distribution inside Refrigerator Compartment". International Journal of Engineering and Advanced Technology 8, nr 6 (30.08.2018): 4199–207. http://dx.doi.org/10.35940/ijeat.f9571.088619.
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The utility of a household fridge is to preserve the food eminence. Eminence of food unswervingly be reliant on temperature and air velocity distribution esoteric the stowing compartments. Disapproving temperature for food preservation will cause food to worsen or dwindling. Proper temperature distribution as well air flow keep the food fresh in the food chambers. This work presents the air flow and temperature distribution through natural convection warmness switch in severally modeled freezer is studied. The freezer and refrigerant compartments is studied for three configurations. The freezer and refrigerant compartments is studied for three configurations. In initial configuration using Plate-evaporator with rectangular finned surface and In second configuration Plate-evaporator while not finned surface and In third configuration Plateevaporator with perforated finned surface. The simulations are carried out using ANSYS 16 work bench computational fluid dynamics software program package. The heat transfer between the freezer and refrigerating compartment is neglected and laminar air flow conditions were assumed. Simulation consequences demonstrate temperature stratification inside the refrigerating section cold and warm region were top and bottom respectively, in freezer compartment warm and cold region were top and bottom for each configurations. Comparison of temperature variation for numerous configurations of refrigerating compartment. The freezer and cold compartments is studied for three configurations. The perforated finned surface provides best result
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Patel, Dipmala, i S. S. Pimpale. "Design Analysis and Experimental Investigation of Adjustable Height Manhole System". International Journal of Engineering Sciences 13, nr 1 (kwiecień 2020). http://dx.doi.org/10.36224/ijes.130105.
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This is often seen that when the roads are to be repaired or re-tarred the man holes get covered up due increase in height of the road and hence they have to reconstructed to adapt to the height of the road else Misaligned manhole frames in streets often cause driving hazards, failure of pavement around the frames, cause poor access to manholes, may be responsible for inflow and infiltration and can also result in other problems. Because manhole frames are not manufactured to be adjustable, an effort to make repairs is time consuming and often in effective. Thus there is a need to develop an height adjustable manhole system where in manhole system be constructed by casting the manhole by suitable method according to the Indian Standard so as to make the system flexible enough to adjust the height of the manhole as per requirement. The scaled model of the height adjustable manhole will be made and solid modeling using Unigraphix software will be done to determine optimal dimension of gear-shaped parts through bending stress formulas and application Ansys work bench software to validate the strength of the manhole analytically. Fabrication of the scaled model will be done after appropriate selection of the nodular cast iron frame work, for nut and screw parts where as the holder elements will be developed by fabrication. Testing will be done by suitable methods to determine and experimentally validate the strength of the developed part of the manhole.
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Abd Halim, M. A., N. A. R. Nik Mohd, M. N. Mohd Nasir i M. N. Dahalan. "Experimental and Numerical Analysis of a Motorcycle Air Intake System Aerodynamics and Performance". International Journal of Automotive and Mechanical Engineering 17, nr 1 (30.03.2020). http://dx.doi.org/10.15282/ijame.17.1.2020.10.0565.
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Induction system or also known as the breathing system is a sub-component of the internal combustion system that supplies clean air for the combustion process. A good design of the induction system would be able to supply the air with adequate pressure, temperature and density for the combustion process to optimizing the engine performance. The induction system has an internal flow problem with a geometry that has rapid expansion or diverging and converging sections that may lead to sudden acceleration and deceleration of flow, flow separation and cause excessive turbulent fluctuation in the system. The aerodynamic performance of these induction systems influences the pressure drop effect and thus the engine performance. Therefore, in this work, the aerodynamics of motorcycle induction systems is to be investigated for a range of Cubic Feet per Minute (CFM). A three-dimensional simulation of the flow inside a generic 4-stroke motorcycle airbox were done using Reynolds-Averaged Navier Stokes (RANS) Computational Fluid Dynamics (CFD) solver in ANSYS Fluent version 11. The simulation results are validated by an experimental study performed using a flow bench. The study shows that the difference of the validation is 1.54% in average at the total pressure outlet. A potential improvement to the system have been observed and can be done to suit motorsports applications.
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"Design of an Aircraft Wing Structure for Static& Fatigue Life Prediction". International Journal of Recent Technology and Engineering 8, nr 2S11 (2.11.2019): 2614–18. http://dx.doi.org/10.35940/ijrte.b1316.0982s1119.
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A wing is a type of blade with a ground that produces streamlined power for flight or strain via the surroundings, (o r) through every other vaporous or fluid liquid. In that potential, wings have an airfoil form, a streamlined pass-sectional form handing over carry. A wing's streamlined e satisfactory is communicated as its increase-to-drag percentage. The increase a wing creates at a given velocity and approach may be one to 2 units of quantity extra fantastic than the absolute delay the wing. A excessive convey-to-drag percentage calls for an altogether littler push to pressure the wings through the air at true sufficient raise. The conditions for the air deliver wing are excessive firmness, high extremely good, high durability and occasional weight. In shape and constrained issue research of flying system wing is planned and confirmed in three-d displaying programming CATIA. The wing is altered with the aid of manner of 3 noteworthy arrangement structure geometries figuring out with decrease share are rectangular, trapezoidal and delta shape. to be able to assemble the great of the wing Trapezoidal maximum ideal for out of 3 shapes. So Trapezoidal form air uniqueness wing is applied in those art work. in this the NACA-4 digit affiliation is carried out for making wing skeleton form and later we made showing, Fatigue and auxiliary research on wing Skelton structure by way of using ANSYS paintings BENCH. The substances applied for air deliver wings are for the maximum factor steel mixtures. on this postulation, the substances are supplanted via composite materials S2 Glass and Kevlar 40 nine. Static examination is completed to determine the distortion ,stresses and lines added by means of making use of loads. weak spot exam to appraise the existence ,harm and well being component of the wing. Modular examination is completed on the air deliver wing to decide the misshapenings and frequencies, worry because of frequencies. investigation is completed in ANSYS.
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Jabbar, Shahad Nazar. "ENHANCING STRUCTURAL RESPONSE USING INERTER DAMPERS". JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES 16, nr 1 (26.01.2021). http://dx.doi.org/10.26782/jmcms.2021.01.00008.
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This paper deals with one kind of dampers which is inerter damper, Inerter is a new mechanical element proposed by Professor Malcolm C. Smith from Cambridge University, which is defined as a mechanical two-terminal, one-port device with the property that the equal and opposite force applied at the terminals is proportional to the relative acceleration between the terminals the principle work of inerter damper is how to convert the linear motion into rotational motion to mitigation the external excitation. Theoretical analysis was presented first part is the analytical study which made modeling for the damping structure proposed and get the equation of motion for the inerter behavior, secondly numerical analysis where the program (ANSYS WORK-Bench 18.2) was adopted, and study the parameters which effected on the damping behavior of inerter structure proposed that is (stiffness, coefficient of friction and mass of flywheel). Where it was found that when the stiffness of the springs increased gradually from (0.2, 0.3, 0.4, 0.6 and 0.8) Kn/mm the amplitude reduced from (25.791, 17.194, 12.896, 8.5974 to 6.4482) mm respectively for each stiffness reading, also the mass of inerter when increased gradually (200,400,600,800 and 1000) g with a constant coefficient of friction and constant stiffness 0.4, 0.6 Kn/mm respectively, the amplitude decrease from 6.3525 to 4.036290. Finally, to study the effect inerter mass on the structures, the mass of inerter increased from (200,400,600,800 to 1000) g gradually to the constant cantilever mass structure equal to 130g. The ratio of the inerter mass to the threshold mass is approximately 1.5 to 7.5 As results obtained from the previous study, the amplitude obtained for each mass (1.0778, 1.069, 1.0509, 0.9514 to 0.872) respectively
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Viswanathan, Harish Thetanikkal, Prem Kumar John i Rajeev Vamadevan Rajalekshmi. "Experimental Modal Analysis of a Linear Reciprocating Tribometer for Maximum Reciprocating Frequency". Journal of Engineering Research, 10.11.2021. http://dx.doi.org/10.36909/jer.10487.
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This work demonstrates estimation of critical reciprocating frequency of a fabricated linear pin-on-reciprocating plate tribometer by modal analysis. Experimental investigation by impact testing and numerical analysis using ANSYS Work bench 14 were performed to extract the modal parameters of individual subsystems. The authors could not find reported literature on of estimation of critical reciprocating frequency of pin-on-reciprocating plate tribometer. Authors developed a pin-onreciprocating plate tribometer that can simulate friction and wear under reciprocating sliding conditions for stroke lengths up to 150 mm. The developed pinon- reciprocating plate tribometer had a loading sub system, transmission subsystem and measurement subsystem. From experimental and numerical estimation of modal parameters, transmission subsystem found to had the lowest modal frequency of 18 Hz. Maximum frequency of reciprocation then fixed at 30% of the lowest modal frequency of 18 Hz that is 5 Hz. Confirmatory friction tests were then conducted on the tribometer and found that identification of maximum frictional force was difficult when the reciprocating frequency of plate of tribometer exceeded 4 Hz due to vibrations in measuring system and agreed with the reported literature. This work addresses the need of methodology for establishing critical reciprocating frequency of tribometer. This paper elaborates the modal analysis of a fabricated linear reciprocating tribometer. Resonance of subsystems in reciprocating tribometer affects experimental estimate of coefficient of friction (CoF). Subsystems have their own individual modal frequencies. Hence, modal analysis of all subsystems becomes obligatory. Tribometer developed for this study can simulate reciprocating friction and wear for stroke lengths up to 150 mm. Experimental and numerical analysis utilized to identify modal frequency of individual subsystems. Tests identified that transmission subsystem had the lowest modal frequency of 18 Hz. Maximum frequency of reciprocation then fixed at 4Hz. This is 25% of the lowest modal frequency of 18 Hz as delineated in literature. Confirmatory friction tests then conducted on the tribometer. Resolving maximum frictional force along the stroke length was impossible over 4 Hz of reciprocating frequency. This is 25% of the lowest modal frequency of structure and agreed with the reported literature. Authors sincerely hope the methodology used in this paper will guide fellow researchers for modal analysis of reciprocating tribometer.
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Flouros, Michael. "Analytical and Numerical Simulations of the Two-Phase Flow Heat Transfer in the Vent and Scavenge Pipes of the CLEAN Engine Demonstrator". Journal of Turbomachinery 132, nr 1 (16.09.2009). http://dx.doi.org/10.1115/1.3068331.
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Advanced aircraft engine development dictates high standards of reliability for the lubrication systems, not only in terms of the proper lubrication of the bearings and the gears, but also in terms of the removal of the large amounts of the generated heat. Heat is introduced both internally through the rotating hardware and externally through radiation, conduction, and convection. In case where the bearing chamber is in close proximity to the engine’s hot section, the external heat flux may be significant. This is, for example, the case when oil pipes pass through the turbine struts and vanes on their way to the bearing chamber. There, the thermal impact is extremely high, not only because of the hot turbine gases flowing around the vanes, but also because of the hot cooling air, which is ingested into the vanes. The impact of this excessive heat on the oil may lead to severe engine safety and reliability problems, which can range from oil coking with blockage of the oil tubes to oil fires with loss of part integrity, damage, or even failure of the engine. It is therefore of great importance that the oil system designer is capable of predicting the system’s functionality. As part of the European Research program efficient and environmentally friendly aero-engine, the project component validator for environmentally friendly aero-engine (Wilfert, et al., 2005, “CLEAN–Validation of a GTF High Speed Turbine and Integration of Heat Exchanger Technology in an Environmental Friendly Engine Concept,” International Symposium on Air Breathing Engines, Paper No. ISABE-2005-1156;Gerlach et al., 2005, “CLEAN–Bench Adaptation and Test for a Complex Demo Engine Concept at ILA Stuttgart,” International Symposium on Air Breathing Engines, Paper No. ISABE-2005-1134) was initiated with the goal to develop future engine technologies. Within the scope of this program, MTU Aero Engines has designed the lubrication system and has initiated an investigation of the heat transfer in the scavenge and vent tubes passing through the high thermally loaded turbine center frame (TCF). The objective was to evaluate analytical and numerical models for the heat transfer into the air and oil mixtures and benchmark them. Three analytical models were investigated. A model that was based on the assumption that the flow of air and oil is a homogeneous mixture, which was applied on the scavenge flow. The other two models assumed annular two-phase flows and were applied on the vent flows. Additionally, the two-phase flow in the scavenge and vent pipes was simulated numerically using the ANSYS CFX package. The evaluation of the models was accomplished with test data from the heavily instrumented test engine with special emphasis on the TCF. Both the analytical and the numerical models have demonstrated strengths and weaknesses. The homogeneous flow model correlation and the most recent correlation by Busam for vent flows have demonstrated very good agreement between test and computed results. On the other hand the numerical analysis produced remarkable results, however, at the expense of significant modeling and computing efforts. This particular work is unique compared with published investigations since it was conducted in a real engine environment and not in a simulating rig. Nevertheless, research in two-phase flow heat transfer will continue in order to mitigate any deficiencies and to further improve the correlations and the CFD tools.