Simulation of crashworthiness problems with improved contact algorithms for implicit time integration |
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| Affiliation: | 1. NIKI Ltd. Digital Engineering, Research Center, 205 Ethnikis Antistasis Street, 45500 Katsika, Ioannina, Greece;2. TWT GmbH Science & Innovation, Mathematical Research, Ernsthaldenstr. 17, 70565 Stuttgart, Germany;1. Université de Carthage, Institut national des sciences appliquées et de technologie, Laboratoire de recherche matériaux, mesures et applications, LR 11 ES 25, INSAT, B.P. 676, 1080 Tunis cedex, Tunisie;2. Université de Carthage, Institut national des sciences appliquées et de technologie, Laboratoire d''ingénierie mathématique, EPT, La Marsa, Tunisie;3. Laboratoire de mécanique des fluides et d''acoustique, CNRS/Université de Lyon, Université Claude-Bernard Lyon-1/École centrale de Lyon/INSA de Lyon, ECL, 36, avenue Guy-de-Collongue, 69134 Écully cedex, France;4. IMFT, UMR CNRS/INP/UPS 5502, UFR MIG, Université Paul-Sabatier, 118, route de Narbonne, 31062 Toulouse cedex, France;1. CNRS, PSL Research University, EPHE, UM, SupAgro, IRD, INRA, UMR 5175 CEFE, 1919 Route de Mende, 34293 Montpellier Cedex 5, France;2. Parc National des Pyrénées, 2 rue du IV septembre, 65000 Tarbes, France;3. Parc National de la Vanoise, 135 rue du Dr Julliand, 73000 Chambéry, France;1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China;2. INFN Laboratori Nazionali di Frascati, Via E Fermi 40, c.p. 13, I-00044 Frascati, Italy;3. Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan;4. Département Matériaux Nanosciences, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Université de Rennes 1, 35042 Rennes Cedex, France;5. Physics Division, School of Science and Technology, Università di Camerino, via Madonna delle Carceri 9, I-62032 Camerino (MC), Italy |
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| Abstract: | When studying crashworthiness problems, contact simulation can be the source of a number of problems. A first one is the discontinuities in the normal evolution for a boundary discretized by finite elements. Another problem is the treatment of the contact forces that can introduce numerical energy in the system. In this paper, we propose to combine a method of discontinuity smoothing with the energy–momentum consistent scheme that recently appeared in the literature. |
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