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Simulation of crashworthiness problems with improved contact algorithms for implicit time integration

✍ Scribed by L. Noels; L. Stainier; J.-P. Ponthot

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 510 KB
Volume: 32
Category: Article
ISSN: 0734-743X
DOI: 10.1016/j.ijimpeng.2005.04.010

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✦ Synopsis

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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Analysis of a time discretization for an

Analysis of a time discretization for an implicit variational inequality modelling dynamic contact problems with friction

✍ Jean-Marc Ricaud; Elaine Pratt 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 167 KB

## Abstract Some dynamic contact problems with friction can be formulated as an implicit variational inequality. A time discretization of such an inequality is given here, thus giving rise to a so‐called incremental solution. The convergence of the incremental solution is established, and then the