Mechanical Contact Experiments and Simulations

Chris Valentin Nielsen, P Martins, W. Zhang, Niels Bay

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Mechanical contact is studied under dynamic development by means of a combined numerical and experimental investigation. The experiments are designed to allow dynamical development of non-planar contact areas with significant expansion in all three directions as the load is increased. Different geometries and different materials are analyzed including contact between dissimilar materials. The numerical implementation is performed with a finite element computer program based on the irreducible flow formulation, and contact between deformable objects is modelled by applying the penalty method. The overall investigation serves for testing and validating the numerical implementation of the mechanical contact, which is one of the main contributions to a system intended for 3D simulation of resistance welding. Correct modelling of contact between parts to be welded, as well as contact with electrodes, is crucial for satisfactory modelling of the resistance welding process. The resistance heating at the contact interfaces depends on both contact area and pressure, and as the contact areas develop dynamically, the presented tests are relevant for assessing the validity and accuracy of the mechanical contact modelling. Experimental results and numerical predictions show good agreement as regards geometry and force-displacement curves.
Original languageEnglish
JournalSteel Research International
Volume82
Issue numberSpecial issue
Pages (from-to)645-650
ISSN1611-3683
Publication statusPublished - 2011
Event10th International Conference on Technology of Plasticity - Aachen, Germany
Duration: 25 Sep 201130 Sep 2011
Conference number: 10
http://www.materialsviews.com/the-10th-international-conference-on-technology-of-plasticity-ictp-2011/

Conference

Conference10th International Conference on Technology of Plasticity
Number10
Country/TerritoryGermany
CityAachen
Period25/09/201130/09/2011
Internet address

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