Author(s)

E. Anderheggen, D. Ekchian, K. Heiduschke & P. Bartelt

Abstract

A contact algorithm for explicit dynamic FEM analysis E. Anderheggen", D. Ekchian", K. Heiduschke", P. Bartelt^ "Swiss Federal Institute of Technology, Honggerberg, CH-8093 Zurich, Switzerland %2 AG, Corporal Aesearc^ FI-^P^ Schaan, Principality of Liechtenstein ABSTRACT A numerical contact algorithm which can be used with an explicit time integration scheme in a finite element code is introduced. Its effective- ness is demonstrated on low velocity impact and penetration problems containing many contact surfaces. The treatment so far is two-dimen- sional and without friction. INTRODUCTION The increasing interest in dynamic penetration and wave propagation phenomena has heightened the need for simulation tools capable of modelling multi-body impacts. Engineers who have analysed such prob- lems, have traditionally relied on one-dimensional analytical solutions [1]. These are valid as long as the system is truly one-dimensional and remains elastic. For c

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