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Articles de revues sur le sujet « Experimental and numerical approach »

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Auteur : Grafiati

Publié le 25 mai 2024

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1

Rafiee, Ashkan, Fabrizio Pistani et Krish Thiagarajan. « Study of liquid sloshing : numerical and experimental approach ». Computational Mechanics 47, n^o 1 (27 août 2010) : 65–75. http://dx.doi.org/10.1007/s00466-010-0529-6.

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Cherneva, Sabina, Milko Yordanov, Dimitar Stoychev et Rumen Iankov. « Experimental-Numerical Approach for Characterization of Mechanical Properties of Thin Electrochemically Deposited Chromium and Copper Films ». Solid State Phenomena 159 (janvier 2010) : 157–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.159.157.

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A hybrid experimental-numerical approach, which combines microindentation experiments (where we measure the diagonal of the residual imprint after unloading) and numerical simulations by means of the finite-element method has been developed. The investigated materials in the present work are electrochemically deposited on brass substrates chromium and copper films with known thickness and unknown mechanical properties. Mechanical properties of the brass (CuZn36) substrate are known. Vickers’ microindentation experiments were carried out on the films and as a result the experimental load-displacement curves were obtained. After that the process of microindentation was modelled numerically by means of the finite-element method. Numerically obtained load-displacement curves were compared with the experimental curves. The results show good coincidence between numerical and experimental curves. Additionally it was realized nanoindentation experiment of thin copper film and these two methods (nanoindentation experiment and hybrid experimental-numerical method which combines experiment of microindentation and numerical simulations) for determination of mechanival properties of thin copper films were compared. Results obtained by means of the afore-mentioned two methods almost coincide but the second method is cheaper and gives more information about material properties of the film than the first method. It is shown that the second method is preferable to determine the mechanical properties of thin metal films.

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3

Erklig, Ahmet, et M. Akif Kütük. « Experimental Finite Element Approach for Stress Analysis ». Journal of Engineering 2014 (2014) : 1–7. http://dx.doi.org/10.1155/2014/643051.

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This study aims to determining the strain gauge location points in the problems of stress concentration, and it includes both experimental and numerical results. Strain gauges were proposed to be positioned to corresponding locations on beam and blocks to related node of elements of finite element models. Linear and nonlinear cases were studied. Cantilever beam problem was selected as the linear case to approve the approach and conforming contact problem was selected as the nonlinear case. An identical mesh structure was prepared for the finite element and the experimental models. The finite element analysis was carried out with ANSYS. It was shown that the results of the experimental and the numerical studies were in good agreement.

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Smolnicki, Michal Jan, Michal Ptak et Grzegorz Lesiuk. « Static failure load predictions in notched steel components using a combined experimental-numerical approach ». International Journal of Structural Integrity 8, n^o 6 (4 décembre 2017) : 683–93. http://dx.doi.org/10.1108/ijsi-05-2017-0032.

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Purpose The combined numerical-experimental approach has been presented. The purpose of this paper is to determine the critical rupture load of the notched components based on the cohesive zone modeling (CZM). Design/methodology/approach The 42CrMo4 steel (in normalized state) state has been tested and modeled using an eXtended finite element method (xFEM) philosophy with the CZM approach. In order to validate the numerically obtained critical load forces the experimental verification was performed. Findings The critical loads were determined for various notch configurations. The numerical and experimental values were compared. Based on this, a good agreement between experimental and numerical data is achieved. The relative error does not exceed 7 percent. Practical implications The presented procedure and approach is effective and simple for engineering applications. It is worth to underline that the obtained critical load values for notched components require only the static tensile test results and implementation of the presented route in numerical FEM, xFEM environment. Originality/value The presented methodology is actual and still developed. The scientific and engineering value of the presented numerical procedure is high.

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Wu, Xiaoming, Changgen Shi, Ke Feng, Li Gao, Wenxuan Li et Kun Qian. « Experimental and numerical approach to titanium-aluminum explosive welding ». Materials Research Express 8, n^o 9 (1 septembre 2021) : 096503. http://dx.doi.org/10.1088/2053-1591/ac2017.

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Mahmutovic, Dino, Soanarivo Rinah Andriantrehina, Luc Boutonnier, Jacques Monnet, Saïd Taibi et Thierry Dubreucq. « Earthwork laboratory tests and suction – experimental and numerical approach ». E3S Web of Conferences 9 (2016) : 20006. http://dx.doi.org/10.1051/e3sconf/20160920006.

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Chryssolouris, G., K. Tsirbas et K. Salonitis. « An Analytical, Numerical, and Experimental Approach to Grind Hardening ». Journal of Manufacturing Processes 7, n^o 1 (janvier 2005) : 1–9. http://dx.doi.org/10.1016/s1526-6125(05)70076-1.

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Wallevik, Jon Elvar. « Thixotropic investigation on cement paste : Experimental and numerical approach ». Journal of Non-Newtonian Fluid Mechanics 132, n^o 1-3 (décembre 2005) : 86–99. http://dx.doi.org/10.1016/j.jnnfm.2005.10.007.

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Moldovan, Ionuţ Dragoş, António Gomes Correia et Cláudio Pereira. « Bender-based G0 measurements : A coupled numerical–experimental approach ». Computers and Geotechnics 73 (mars 2016) : 24–36. http://dx.doi.org/10.1016/j.compgeo.2015.11.011.

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Lüders, Caroline, Gerhard Kalinka, Wei Li, Michael Sinapius et Tobias Wille. « Experimental and numerical multiscale approach to thermally cycled FRP ». Composite Structures 244 (juillet 2020) : 112303. http://dx.doi.org/10.1016/j.compstruct.2020.112303.

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11

Georgescu, Mircea, Viorel Ungureanu, Aurelian Gruin et Andra Floricel. « Building Cladding using Liner Trays : Experimental and Numerical Approach ». IOP Conference Series : Materials Science and Engineering 603 (18 septembre 2019) : 022051. http://dx.doi.org/10.1088/1757-899x/603/2/022051.

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Schlangen, E., et J. G. M. Van Mier. « Crack propagation in sandstone : Combined experimental and numerical approach ». Rock Mechanics and Rock Engineering 28, n^o 2 (avril 1995) : 93–110. http://dx.doi.org/10.1007/bf01020063.

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13

Li, Bo, Venkata Rama Lakshmi Preethi Bahadursha et Michelle S. Hoo Fatt. « Predicting failure in rubber membranes : An experimental-numerical approach ». Engineering Failure Analysis 90 (août 2018) : 404–24. http://dx.doi.org/10.1016/j.engfailanal.2018.04.003.

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14

Qamar, Ihtzaz, et S. Wilayat Husain. « A numerical approach to find parameters using experimental data ». Communications in Applied Numerical Methods 7, n^o 4 (juin 1991) : 259–63. http://dx.doi.org/10.1002/cnm.1630070402.

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El Azhary, Karima, Mohamed Ouakarrouch, Najma Laaroussi et Mohammed Garoum. « Energy Efficiency of a Vernacular Building Design and Materials in Hot Arid Climate : Experimental and Numerical Approach ». International Journal of Renewable Energy Development 10, n^o 3 (10 février 2021) : 481–94. http://dx.doi.org/10.14710/ijred.2021.35310.

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Morocco faces tremendous climate constraints; the climate is hot and dry in most parts of the country, and when selecting an energy-saving approach, the architectural landscape becomes essential.Designer and building professionals seem to have neglected this large-scale integration. Sustainable development programs in terms of sustainable architecture are ongoing in countries around the world. One part of this trend is the growing concern shown in the high environmental efficiency of vernacular architecture. It is within this prescriptive framework that this research study is being conducted, which reveals novel architectural style integrating thermal comfort, energy efficient characteristics, passive solar elements architecture, and construction techniques inspired from the vernacular Ksourian architectural configurations. The goal of the present research study is to identify features of energy efficient vernacular architecture and thermal performances that affect indoor thermal comfort conditions for adaptation to current lifestyles in modern architecture. The key characteristics developed are; built mass structure, building orientation, space planning, availability of s, building techniques, and new coating materials for manufacturing and roofing. The suggested methodology enables to analyze the thermal performance analysis, applying an experimental research using experimental testing measurement and comparative optimization processes for thermal efficiency and comfort evaluation of a traditional vernacular earthen house.Series of experimental thermophysical characterization measurements have been carried out in order to quantify on a real scale the thermophysical properties that characterize the Rissani earth. Thusthermophysical characterization results are operated as input data for the thermal dynamic simulation for the purpose to evaluate thermal performances and comfort under the weather conditions and control natural comfort in both summer and winter, without using heating or cooling systems. Ultimately, the simulations carried out make it possible to identify the optimal orientation, revealing an effective decrease in interior temperatures during summer and providing good thermal comfort in winter.

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Ostojic, Mile. « Numerical Approach to Nonlinear Control Design ». Journal of Dynamic Systems, Measurement, and Control 118, n^o 2 (1 juin 1996) : 332–37. http://dx.doi.org/10.1115/1.2802323.

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The paper presents a new approach to designing tracking control of uncertain nonlinear plants. The approach is entirely based on numerical methods and corresponding recurrence relations. It results in recursive control laws that resolve plant nonlinearities and compensate all disturbances and parameter variations. Also, it enables a free shaping of the control error dynamics. Control algorithms based on the method of successive substitutions and the Newton’s method are studied in detail. Detailed description of an application and experimental evaluation is included.

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Kozłowski, Marcin, Kinga Zemła, Magda Kosmal et Ołeksij Kopyłow. « Experimental and FE Study on Impact Strength of Toughened Glass–Retrospective Approach ». Materials 14, n^o 24 (12 décembre 2021) : 7658. http://dx.doi.org/10.3390/ma14247658.

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Due to the high cost of experiments commonly performed to verify the resistance of glass elements to impact loads, numerical models are used as an alternative to physical testing. In these, accurate material parameters are crucial for a realistic prediction of the behaviour of glass panels subjected to impact loads. This applies in particular to the glass’s strength, which is strictly dependent on the strain rate. The article reports the results of an extensive experimental campaign, in which 185 simply supported toughened glass samples were subjected to hard-body impacts. The study covers a wide range of glass thicknesses (from 5 to 15 mm), and it aims to determine a critical drop height causing fracture of the glass. Moreover, a 3D numerical model of the experimental set-up was developed to reproduce the experiments numerically and retrospectively to determine the peak stress in glass that developed during the impact. Based on the results of numerical simulations, a load duration factor of 1.40 for toughened glass for impact loads is proposed. In addition, the paper includes a case study to demonstrate the use of the modelling methodology and results of the work on a practical example of an internal glass partition wall.

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Le Cornec, Domitille, Laurent Cormier, Laurence Galoisy, Benoit Baptiste, Nicolas Trcera, Laurent Izoret et Georges Calas. « Molecular structure of amorphous slags : An experimental and numerical approach ». Journal of Non-Crystalline Solids 556 (mars 2021) : 120444. http://dx.doi.org/10.1016/j.jnoncrysol.2020.120444.

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19

Cejpek, Ondrej, Milan Maly, Miloslav Bělka, Jaroslav Slama, Ondrej Hajek, Frantisek Prinz et Jan Jedelský. « Spray in cross–flow : comparison of experimental and numerical approach ». EPJ Web of Conferences 264 (2022) : 01007. http://dx.doi.org/10.1051/epjconf/202226401007.

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The spray behaviour and droplet trajectories in realistic conditions are of crucial importance in many industrial, agricultural and chemical applications. Droplet characteristics and spray trajectory in chemical applications (e. g. flue gas scrubbing, CO2 capture in spray column) determine the amount of mass involved in the gas scrubbing process, mass trapped by the flow or attached to the walls. Knowledge of the droplet behaviour can improve a nozzle design and scaling, increase the process efficiency, minimize the process liquid and blow away the fraction. In this study, experiments with pressure swirl nozzle in cross–flow of air were performed at one nozzle injection pressure (0.5 MPa) and several cross–flow velocities (8, 16, 32 m/s). The results on droplet trajectories are compared with numerical results obtained by ANSYS Fluent. Two Lagrange approaches for spray modelling were used. Injection of droplet groups and Linearized Instability Sheet Atomization (LISA) model incorporated within ANSYS Fluent were used to represent the spray. The CFD results of spray penetration and droplet trajectories are compared with experimental data. A simple analytical model is able to well predict trajectories of large droplets, but fails to predict trajectories of small droplets. The LISA model yields a better accuracy for spray in cross-flow prediction.

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Doubrava, Karel, et Ctirad Novotný. « Development of the Bus Sandwich Roof Experimental and Numerical Approach ». Applied Mechanics and Materials 732 (février 2015) : 211–14. http://dx.doi.org/10.4028/www.scientific.net/amm.732.211.

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This paper describes the design verification process of a new bus roof. The aim was to obtain a roof with comparable or better mechanical properties and likely dropped weight. The sandwich roof is developed in the framework of the project when properties matching real roof were compared to test samples. Different core materials and faces have been investigated. The experimental results serve to verify the suitability of the proposed FEM modelling for the future use on global structure roof numerical model.

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21

Welsford, C., P. Thanapathy, A. M. Bayomy, M. Ren et M. Ziad Saghir. « HEAT ENHANCEMENT USING ALUMINUM METAL FOAM : EXPERIMENTAL AND NUMERICAL APPROACH ». Journal of Porous Media 23, n^o 3 (2020) : 249–66. http://dx.doi.org/10.1615/jpormedia.2020026859.

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22

Valašková, Veronika, Daniela Kuchárová et Jozef Melcer. « Two-span bridge under moving load – numerical and experimental approach ». Journal of Vibroengineering 22, n^o 3 (15 mai 2020) : 672–84. http://dx.doi.org/10.21595/jve.2020.21056.

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23

Sala, Giuseppe. « A numerical and experimental approach to optimise sheet stamping technologies ». Materials & ; Design 22, n^o 4 (juin 2001) : 285–98. http://dx.doi.org/10.1016/s0261-3069(00)00087-x.

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24

Brosh, T., et M. Arcan. « Modeling the body/chair interaction – an integrative experimental–numerical approach ». Clinical Biomechanics 15, n^o 3 (mars 2000) : 217–19. http://dx.doi.org/10.1016/s0268-0033(99)00073-x.

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Guillemer, C., M. Clavel et G. Cailletaud. « Cyclic behavior of extruded magnesium : Experimental, microstructural and numerical approach ». International Journal of Plasticity 27, n^o 12 (décembre 2011) : 2068–84. http://dx.doi.org/10.1016/j.ijplas.2011.06.002.

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Chan, Jenq-Tzong H. « Multivariable control system synthesis : An experimental data based numerical approach ». Automatica 30, n^o 9 (septembre 1994) : 1479–83. http://dx.doi.org/10.1016/0005-1098(94)90015-9.

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27

Giglio, M., A. Manes et A. Gilioli. « Investigations on sandwich core properties through an experimental–numerical approach ». Composites Part B : Engineering 43, n^o 2 (mars 2012) : 361–74. http://dx.doi.org/10.1016/j.compositesb.2011.08.016.

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Pina, J. C., V. G. Kouznetsova et M. G. D. Geers. « Elevated temperature creep of pearlitic steels : an experimental–numerical approach ». Mechanics of Time-Dependent Materials 18, n^o 3 (août 2014) : 611–31. http://dx.doi.org/10.1007/s11043-014-9244-6.

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Sousa, Rui, Hipólito Sousa et João Guedes. « Diagonal compressive strength of masonry samples—experimental and numerical approach ». Materials and Structures 46, n^o 5 (28 août 2012) : 765–86. http://dx.doi.org/10.1617/s11527-012-9933-z.

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30

Georgescu, Mircea, Viorel Ungureanu, Liviu Marsavina, Andra Floricel et Aurelian Gruin. « Composite Roofing of PIR Sandwich Panels : Numerical and Experimental Approach ». IOP Conference Series : Materials Science and Engineering 471 (23 février 2019) : 052092. http://dx.doi.org/10.1088/1757-899x/471/5/052092.

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El-Anwar, Hazem Hossam, Mohammed Hassanien Serror et Hesham Sobhy Sayed. « Damping identification procedure for linear systems : mixed numerical-experimental approach ». Earthquakes and Structures 4, n^o 2 (25 février 2013) : 203–17. http://dx.doi.org/10.12989/eas.2013.4.2.203.

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Poon, C. Y., et C. Ruiz. « Hybrid experimental-numerical approach for determining strain energy release rates ». Theoretical and Applied Fracture Mechanics 20, n^o 2 (juin 1994) : 123–31. http://dx.doi.org/10.1016/0167-8442(94)00007-7.

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Carette, Jérôme, François Soleilhet, Farid Benboudjema, Xiaoyan Ma, Georges Nahas, Kamilia Abahri, Aveline Darquennes et Rachid Bennacer. « Identifying the mechanisms of concrete drying : An experimental-numerical approach ». Construction and Building Materials 230 (janvier 2020) : 117001. http://dx.doi.org/10.1016/j.conbuildmat.2019.117001.

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Lv, Shengli, Yuanyang Miao, Wei Zhang, T. S. Srivatsan et Xiaosheng Gao. « Study of mechano-electrochemical model : a numerical and experimental approach ». Emerging Materials Research 13, n^o 2 (1 juin 2024) : 1–12. http://dx.doi.org/10.1680/jemmr.22.00179.

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The mechano-chemical effects of elasticity and plasticity are introduced into a peridynamic (PD) corrosion model. A PD equation that couples the mechanics and kinetics of electrochemistry is proposed for the first time. This clarifies the influence of mechanical load in governing the occurrence of diffusion during corrosion. The phase changes experienced by a material are used to characterize the movement of the corrosion boundary, and the concentration of material points is used to characterize the degree and extent of damage caused to the chosen metal. Immersion tests and in-situ electrochemical tests are carried out, and the results are used to explore the effects of stress and/or load on the kinetics of environment-induced damage to an aluminum alloy. The model predictions are in good agreement with the experimental observations. The results of this study demonstrate that a coupled mechano-electrochemical PD corrosion model can capture corrosion-induced damage and be used to study damage propagation upon exposure to an aggressive environment.

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Mohd Rosli, Mohd Afzanizam, Yew Wai Loon, Muhammad Zaid Nawam, Suhaimi Misha, Aiman Roslizar, Faridah Hussain, Nurfaizey Abdul Hamid, Zainal Arifin et Safarudin Gazali Herawan. « Validation Study of Photovoltaic Thermal Nanofluid Based Coolant Using Computational Fluid Dynamics Approach ». CFD Letters 13, n^o 3 (31 mars 2021) : 58–71. http://dx.doi.org/10.37934/cfdl.13.3.5871.

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In the study, the photovoltaic thermal system using nanofluid as coolant is validated using numerical approach by comparing the experimental results and simulation results. Due to high cost and difficulty in preparing nanofluid, it is more practical to perform the study using numerical approach which is convenient and saves plenty of time. The photovoltaic thermal system is investigated numerically through Computational Fluid Dynamics Approach using Ansys 19.0 Fluent Software. The numerical study is based on different solar irradiation at different hours. The coolant that is selected in the study is aluminum oxide () water nanofluid. The validation study between the experimental results and simulation results are achieved by examining the photovoltaic (PV) surface temperature and nanofluid outlet temperature. The maximum percentage of error between experimental and simulation results of PV surface temperature and nanofluid outlet temperature are 12.66% and 7.89%. Also, the mean average percentage error (MAPE) are computed for PV surface temperature and nanofluid outlet temperature. The results for PV surface temperature and nanofluid outlet temperature are 10.31% and 6.67%. Since the MAPE results are within 10% or error, it proved that there is good accuracy between the simulation and experimental results.

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Hirwani, Chetan K., Subrata K. Panda, Siba S. Mahapatra, Sanjib K. Mandal, Lokesh Srivastava et Manoj K. Buragohain. « Flexural strength of delaminated composite plate – An experimental validation ». International Journal of Damage Mechanics 27, n^o 2 (12 novembre 2016) : 296–329. http://dx.doi.org/10.1177/1056789516676515.

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In the present work, the flexural strength of delaminated composite plate has been analysed numerically and compared with experimental results. For the numerical investigation, a general mathematical model of the laminated composite plate with and without delamination has been developed using two higher-order kinematic models. The desired governing equation is obtained using variational approach and discretised with the help of the isoparametric finite element steps. The flexural responses of the delaminated structure computed numerically through a generic in-house computer code developed in MATLAB environment. The consistency of the developed numerical models is checked and validated by comparing the bending responses with the available published results. Now, the experimental bending responses of both intact and delaminated composites are evaluated using three-point bend test and compared with numerical responses of the presently developed higher-order models. Finally, the effect of different materials and geometrical parameters including the size, location and position of the delamination on the bending behaviour of the laminated composite plate have been analysed numerically and discussed in detail.

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Windhab, E. J. « Microstructure-Rheology Relationships for Complex Emulsion Systems under Shear and Elongation : A Coupled Experimental, Numerical Simulation and Modeling approach ». Reference Collection of Annual Meeting 2004.8 (2004) : 18. http://dx.doi.org/10.1299/jsmemecjsm.2004.8.0_18.

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deLorenzi, H. G., H. F. Nied et C. A. Taylor. « A Numerical/Experimental Approach to Software Development for Thermoforming Simulations (Survey Paper) ». Journal of Pressure Vessel Technology 113, n^o 1 (1 février 1991) : 102–14. http://dx.doi.org/10.1115/1.2928719.

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This paper describes a combined numerical and experimental approach to the development of a software package for simulating the thermoforming process. In this process thin polymer sheets are forced under pressure into a mold cavity. During the forming process the polymer is subjected to large deformations, which result in severe nonuniform thinning. The development of the simulation software was facilitated by a close interaction between numerical modeling and experiment. On the one hand, experimental results guided the development of the software, and on the other hand, numerical developments have been used to suggest new experiments to be performed and critical quantities to be measured. The numerical software is based on the finite element method and the hot polymer is modeled as a nonlinear elastic membrane. Because of the very large deformations occurring in this process, a rigorous large deformation theory has been employed. The numerical formulation also contains contact capabilities for contact between the polymer and the mold and for contact between different parts of the polymer itself. Since very little was known about the physical processes before the program was started, especially about the material behavior and temperatures involved, carefully planned experiments were carried out to guide the selection of the material models used in the software. Since there also was a widespread misconception about the nature of some of the process parameters involved, numerical calculations were used to suggest measurements to be performed on some of these critical parameters. Excellent correlation between calculations and experiment have been obtained and are presented in the paper.

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YOO, JEONGHOON, DONG-TEAK CHUNG et MYUNG SOO PARK. « NUMERICAL AND EXPERIMENTAL APPROACH FOR THE OPTIMAL DESIGN OF A DUAL PLATE UNDER BALLISTIC IMPACT ». International Journal of Modern Physics B 22, n^o 09n11 (30 avril 2008) : 1538–43. http://dx.doi.org/10.1142/s0217979208047043.

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To predict the behavior of a dual plate composed of 5052-aluminum and 1002-cold rolled steel under ballistic impact, numerical and experimental approaches are attempted. For the accurate numerical simulation of the impact phenomena, the appropriate selection of the key parameter values based on numerical or experimental tests are critical. This study is focused on not only the optimization technique using the numerical simulation but also numerical and experimental procedures to obtain the required parameter values in the simulation. The Johnson-Cook model is used to simulate the mechanical behaviors, and the simplified experimental and the numerical approaches are performed to obtain the material properties of the model. The element erosion scheme for the robust simulation of the ballistic impact problem is applied by adjusting the element erosion criteria of each material based on numerical and experimental results. The adequate mesh size and the aspect ratio are chosen based on parametric studies. Plastic energy is suggested as a response representing the strength of the plate for the optimization under dynamic loading. Optimized thickness of the dual plate is obtained to resist the ballistic impact without penetration as well as to minimize the total weight.

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Faisal, Fahim, Md Rayhan Mirza, Sadia Afrin et Debasish Sen. « Modeling and Verification of Multi-Strut Modeling Approach of Masonry Panel Surrounded by RC Frame ». Journal of Engineering Science 13, n^o 2 (15 janvier 2023) : 21–29. http://dx.doi.org/10.3329/jes.v13i2.63723.

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Bangladesh which lies in an earthquake-prone region, possesses many seismically vulnerable structures and would need to be strengthened for future usage following the current building code. In this context, assessing the responses of the existing building frames with or without infilled masonry is essential for designing an adequate strengthening scheme that would be suitable for the building. The current study intends to model and simulate one of the available masonry infilled test specimens where the fiber modeling approach of RC member and the multi-strut model of infill masonry have been considered. In addition, the numerically obtained lateral strength has also been compared with analytically evaluated lateral strength. The lateral responses obtained from the numerical analysis showed a fair agreement with the experimental cyclic behavior having a ratio of experimental to the numerical lateral capacity of 0.97. The numerical lateral strength also indicates good conformity with analytical evaluation having an analytical to numerical lateral capacity ratio of 1.13. Journal of Engineering Science 13(2), 2022, 21-29

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Krishtop, Ihor, Victor German, Alexander Gusak, Svitlana Lugova et Alexey Kochevsky. « Numerical Approach for Simulation of Fluid Flow in Torque Flow Pumps ». Applied Mechanics and Materials 630 (septembre 2014) : 43–51. http://dx.doi.org/10.4028/www.scientific.net/amm.630.43.

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Torque flow pumps are widely used for pumping of fluids with high content of solid and fibrous inclusions and gas bubbles, in particular, for pumping of sewage and wastes. Fluid flow in these pumps is featured with strong vortex patterns, making it difficult to predict reliably their performance curves numerically. The paper is devoted to selection of a numerical approach for simulation of fluid flow in a torque flow pump of “Turo” type and its influence on simulation results. In particular, influence of geometrical configuration of the rotor-stator interface as well as numerical grid fineness is demonstrated. For one geometric configuration, the fluid flow is simulated with different turbulent models, with a steady state as well as transient approach. The simulations were performed using the software product ANSYS CFX. The simulation results are compared with the experimental measurements in the torque flow pump of “Turo” type. The experimental research included probing of fluid flow in three cross-sections of the stator domain, visualizing of streamlines along the rotating and stationary walls, as well as obtaining of performance curves. A good agreement between the numerical and experimental results is obtained as the rotor-stator interface is located at some distance off the rotating parts. Influence of choice of the turbulence model on the simulation results is demonstrated. Conclusions and recommendations are made concerning the choice of initial and boundary conditions, geometrical configuration of the rotor-stator interface, and parameters of turbulence models that affect both the flow pattern in the pump and its performance curves as well as the numerical solution time and required computational resources.

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Schmidt, Tim, David May, Miro Duhovic, Aaron Widera, Martina Hümbert et Peter Mitschang. « A combined experimental–numerical approach for permeability characterization of engineering textiles ». Polymer Composites 42, n^o 7 (3 mai 2021) : 3363–79. http://dx.doi.org/10.1002/pc.26064.

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Kharat, A. H., S. P. Gadewar et S. H. Gawande. « Numerical and Experimental Investigation of Structural Gasketing Approach for Gearbox Flange ». International Review of Mechanical Engineering (IREME) 11, n^o 7 (31 juillet 2017) : 520. http://dx.doi.org/10.15866/ireme.v11i7.13197.

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Senin, Azman, Zulkifli Mohd Nopiah, Muhammad Jamhuri Jamaludin, Mohd Azmir Abidin, Muhamad Azuan Zaudin, Muhammad Afzal Ahmad et Ahmad Zakaria. « Simulation of Automotive Galvanized Steel Stamped Parts : Experimental and Numerical Approach ». Applied Mechanics and Materials 606 (août 2014) : 125–29. http://dx.doi.org/10.4028/www.scientific.net/amm.606.125.

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In the rapid new automobile development, the use of simulation technology is highly demanded due to shorter time to market and fashionable product styling that go beyond the rule-of-thumb in the manufacturing technology. In stamping simulation, the expected predictions rest with the part formability, spring back, blank optimization, and other vehicle integration works. These predictions are conducted concurrently during detailed product design, and intensive product validation is performed based on such predictions. In current work, it has established the experimental mechanical properties and flow curve data for thin galvanized sheet metal. Furthermore, the true prediction of part formability is investigated with established data and standard material database embedded in commercial simulation software. The tensile experiments were carried out on a uniaxial hydraulic tensile test machine with sheet metal specimen and in accordance to ASTM requirements. Three different sheet metal specimens were prepared from the longitudinal, transverse and 450degrees from the rolling direction. From experimental works and formulation, the mechanical properties, anisotropy and flow curve had been obtained. Further improvement in the embedded material database increases the prediction accuracy of FEM analysis for Body-in-White structure and crash performance.

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Celikbilek, O., D. Jauffres, L. Dessemond, M. Burriel, C. L. Martin et E. Djurado. « A Coupled Experimental/Numerical Approach for Tuning High-Performing SOFC-Cathode ». ECS Transactions 72, n^o 7 (19 mai 2016) : 81–92. http://dx.doi.org/10.1149/07207.0081ecst.

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Tillier, Y., Z. Chebbo, M. Vincent, A. Boujlal et D. Gueugnaut. « Electrofusion Welding Process Optimization Using a Coupled Numerical and Experimental Approach ». International Polymer Processing 30, n^o 5 (30 novembre 2015) : 566–73. http://dx.doi.org/10.3139/217.3089.

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Bastos, Sergio Ferreira, Lavinia Borges et Fernando A. Rochinha. « Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates ». Shock and Vibration 9, n^o 4-5 (2002) : 193–201. http://dx.doi.org/10.1155/2002/617913.

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This article deals with the identification of elastic parameters (engineering constants) in sandwich honeycomb orthotropic rectangular plates. A non-destructive method is introduced to identify the elastic parameters through the experimental measurements of natural frequencies of a plate undergoing free vibrations. Four elastic constant are identified. The estimation of the elastic parameter problem is solved by minimizing the differences between the measured and the calculated natural frequencies. The numerical method to calculate the natural frequencies involves the formulation of Rayleigh-Ritz using a series of characteristic orthogonal polynomials to properly model the free edge boundary conditions. The analysis of the results indicates the efficiency of the method.

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Vijaya kumar, R. L., M. R. Bhat et C. R. L. Murthy. « Analysis of composite single lap joints using numerical and experimental approach ». Journal of Adhesion Science and Technology 28, n^o 10 (2 janvier 2014) : 893–914. http://dx.doi.org/10.1080/01694243.2013.873108.

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Tran, Dong Viet Phuong, Pakawat Sancharoen, Pitichon Klomjit et Somnuk Tangtermsirikul. « Electrochemical compatibility of patching repaired reinforced concrete : experimental and numerical approach ». Journal of Adhesion Science and Technology 34, n^o 8 (12 novembre 2019) : 828–48. http://dx.doi.org/10.1080/01694243.2019.1684618.

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Arnoux, P. J., T. Serre, N. Cheynel, L. Thollon, M. Behr, P. Baque et C. Brunet. « Liver injuries in frontal crash situations a coupled numerical—experimental approach ». Computer Methods in Biomechanics and Biomedical Engineering 11, n^o 2 (avril 2008) : 189–203. http://dx.doi.org/10.1080/10255840701553471.

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