20307 The Influence that Mechanical Properties which Constitutive Models Express Give to Accumulated Inelastic Strain Behavior on Solder Joints Study of Mechanical Engineering

Abstract

Classical elastic-plastic-creep model and ANAND model are often used because these models are implemented into commercial FEA soft. However, in ANAND model and classical decoupled creep and plasticity model, how accuracy simulation results by each model accord with experimental test data have been not clarified and how the agreement degree to mechanical properties had influences on life time fatigue have been not enough investigated. So, in this study, at first, for the purpose of getting basic data to investigate these influences, we investigated how accuracy simulation results by each model accord with these experimental test data. Next, using these models, we conduct FE structural analysis of solder joints onactual equipment. This paper will report the progress of this study.