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Simulation of a chassis bushing with regard to strain induced softening of filled rubber
Author(s) -
Gelke Sören,
Ihlemann Jörn
Publication year - 2016
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201610158
Subject(s) - bushing , natural rubber , softening , chassis , materials science , tension (geology) , nonlinear system , compression (physics) , composite material , structural engineering , elastomer , uniaxial tension , strain (injury) , engineering , physics , ultimate tensile strength , quantum mechanics , medicine
A material model is presented, which describes the material behavior of rubbery materials in the case of uniaxial tension/compression. It includes the characteristic nonlinearity of rubber at large strains as well as strain induced softening called Mullins effect. The generalization to arbitrary deformations is done with the concept of representative directions, published by Freund & Ihlemann [2] utilizing a numerical integration on a unit sphere. An FE simulation of a chassis bushing shows that the Mullins effect is reproduced appropriately, verifying the preceding material characterization. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)