Presentation Details

A robust explicit finite element algorithm with bi-penalty stabilization for contact-impact problems

Thursday, 12 Oct 2017; 17:40 - 18:00 in room 7.04

In Session:
MS05-2: Computational Contact Mechanics (Show complete Mini Symposium)
Thursday, 12 Oct 2017; 16:00 - 18:00 in room 7.04
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1^st and presenting Author

Radek Kolman
Department D 4 - Impact and Waves in Solids
Institute of Thermomechanics, Czech Academy of Sciences
Prague, Czech Republic

2^nd Author

Ján Kopačka
Department D 4 - Impact and Waves in Solids
Institute of Thermomechanics, Czech Academy of Sciences
Prague, Czech Republic

3^rd Author

Anton Tkachuk
Institute for Structural Mechanics
University of Stuttgart
Stuttgart, Germany

4^th Author

Dusan Gabriel
Department D 4 - Impact and Waves in Solids
Institute of Thermomechanics, Czech Academy of Sciences
Prague, Czech Republic

5^th Author

José González
Escuela Técnica Superior de Ingeniería
Universidad de Sevilla
Seville, Spain

6^th Author

Manfred Bischoff
Institute for Structural Mechanics
University of Stuttgart
Stuttgart, Germany

Micro Abstract:
We present an explicit time integration scheme for finite element solution of contact-impact problems with stabilization of contact forces using a bi-penalty formulation. The stability limit for an un-penalized system is preserved by a special choice of mass and stiffness penalty parameter ratio. Moreover, the time stepping process produces stable results for a large range of the stiffness penalty parameter. Behavior of the method is shown on impact problems of heterogeneous bars.

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Presentation Details

A robust explicit finite element algorithm with bi-penalty stabilization for contact-impact problems