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Comparisons of multiple-impact laws for multibody systems: Moreau's law, binary impacts, and the LZB approach
Abstract : This chapter is dedicated to the comparison of three well-known models that apply to multiple (that is, simultaneous) collisions: Moreau's law, the binary collision law, and the LZB model. First a brief recall of these three models and of their numerical implementation is done. Then an analysis based on numerical simulations, where the LZB outcome is considered as the reference outcome, is made. It is shown that Moreau's law and the binary collision model possess good prediction capabilities in some few "extreme" cases. The comparisons are made for free chains of aligned grains, and for chains impacting a wall. The elasticity coefficient, restitution coefficients, mass ratios and contact equivalent stiffnesses are used as varying parameters.
Cited literature [49 references]
https://hal.inria.fr/hal-01932551
Contributor : Bernard Brogliato Connect in order to contact the contributor
Submitted on : Friday, November 23, 2018 - 10:24:56 AM
Last modification on : Wednesday, April 27, 2022 - 4:55:48 AM
Contributor : Bernard Brogliato Connect in order to contact the contributor
Submitted on : Friday, November 23, 2018 - 10:24:56 AM
Last modification on : Wednesday, April 27, 2022 - 4:55:48 AM
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ChapterENNSD.pdf
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