Results 111 to 120 of about 6,265 (226)
Exploration of Saint-Venant’s Principle in inertial high strain rate testing of materials
, 2015 Current high strain rate testing procedures of materials are limited by poor instrumentation which leads to the requirement for stringent assumptions to enable data processing and constitutive model identification.
Pierron, F., Zhu, H.
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Importance of the model selection for processing dynamic three-point bending tests [PDF]
, 2010 International audienceThe Split-Hopkinson Pressure Bar apparatus remains the standard test to investigate high strain rate materials properties. To determine the tensile strength of quasi-brittle materials three-point bending tests are frequently ...
Delvare, Franck +3 more
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, 2014 In order to perform experimental identification of high strain rate material models, engineers have only a very limited toolbox based on test procedures developed decades ago.
Pierron, F., Siviour, C., Zhu, H.
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INVERSE COMPUTATIONAL DETERMINATION OF JOHNSON-COOK PARAMETERS USING THE SHPB TEST APPARATUS
Acta Polytechnica CTU Proceedings, 2019 The paper describes determination of the material parameters of the Johnson-Cook constitutive model of steel S235 JR sample material by applying the inverse computational methodology using the digital twin model of the SHPB.
Anja Mauko, Branko Nečemer, Zoran Ren
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Crack Detection and Evolution Law for Rock Mass under SHPB Impact Tests
Shock and Vibration, 2019 In order to accurately identify and quantitatively calculate the surface cracks of rock mass under SHPB impact loading, an automatic crack detection algorithm was proposed and evaluated by the experiment.
Xie Beijing, Dihao Ai, Yu Yang
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Experimental study on granite and the determination of its true strain-rate effect
Latin American Journal of Solids and StructuresTo accurately determine the true strain-rate effect of granite in split Hopkinson pressure bar (SHPB) tests, systematic experimental studies from quasi-static to dynamic loading on the same batch of granite samples is required.
Yong Cai, Shuisheng Yu, Yubin Lu
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, 2019 We show that the initial value problem for Hamilton-Jacobi equations with multiplicative rough time dependence, typically stochastic, and convex Hamiltonians satisfies finite speed of propagation.
Gassiat, Paul +3 more
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Correlations between cancellous bone architecture and its dynamic behaviour [PDF]
, 2014 Previous studies showed that in vivo evaluation of the fracture risk of cancellous bone can be assessed by identifying the relationships between its microarchitecture description extracted from clinical imaging and its mechanical properties.
BOUSSON, Valérie +4 more
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Numerično modeliranje in validacija shpb preizkuševališča
, 2017 V okviru magistrskega dela je bil zgrajen numerični model SHPB preizkuševališča v programskem paketu LS-Dyna. Na podlagi eksperimentalno zajetih in obdelanih signalov izvedenih mehanskih preizkusov je bila izvedena validacija numeričnega modela. Za določanje dinamičnih mehanskih materialnih lastnosti je bil uporabljen inverzni postopek.
openaire +1 more source
Viscoelastic impact between a cylindrical striker and a long cylindrical bar
, 2007 International audienceAxial impact between a cylindrical striker of finite length and a long cylindrical bar, both of linearly viscoelastic materials, is considered under uni-axial conditions.
Bussac, M.-N. M.-N. +4 more
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