110 Elasto-plastic modeling for resin materials depending on temperatures and strain rates

Abstract

Highly functionalized polymer materials are demanded to improve performance by computer simulation because of its economical efficiency. Recently, constitutive law including the effect of dumping are needed for modeling such materials. Elasto-viscous models are generally selected in this case as it can represent dumping conveniently, while elasto-plastic models can be an effective option when we consider problems of wide strain range. Based on above, we need to apply proper constitutive law to practical design of commercial products. Therefor we remarked at elastoplastic models for the key step. The aim in this paper is representing yield point of resin materials which depend on temperatures and strain rates by adopting Cowper-Symonds equation. We paid attention to take simple ways so it might be manageable when dealing with some similar analyses.