2016
EMSS 2016 Proceeding
A comparative study of hyperelastic constitutive models for an automotive component material
Authors: R. Tobajas, D. Elduque, C. Javierre, E. Ibarz, L. Gracia
Abstract
The use of thermoplastic elastomers has strongly increased in recent decades in order to reduce the size of components in the automotive and aeronautical industries. To design this kind of components, engineers face the challenge of reproducing the behavior of these materials by numerical simulations. This task is not always simple because these materials often have a strongly nonlinear behavior. In this paper an elastomer thermoplastic material has been analyzed and an automotive component has been studied by five numerical simulations with five material constitutive models. This study shows that a careful choice of the constitutive model should be made to obtain reliable results. Although several constitutive models fit well with the experimental data of uniaxial testing, when these are used in actual components, there are significant differences in the obtained results.
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