MODELING AND IDENTIFICATION OF ELASTIC-PLASTIC SYSTEMS USING THE DISTRIBUTED-ELEMENT MODEL

A modeling technique is proposed for a class Of distributed-element mo dels, which is able to account for the multi-axial Bauschinger effect without arty additional kinematic hardening rules. The parameters asso ciated with each of the elements in the model are specified by introdu cing an appropriate strength distribution function so as to make the m odel parsimonious in parameters regardless of the number of elements i ntroduced in the model. Validity of the proposed modeling technique, i n both modeling and identification of elastic-plastic systems, is demo nstrated by biaxial tension-torsion applications using experimental re sults from the literature.