Experimental determination of yield functions for compaction of blended metal powders

Abstract

A one step forward gradient time integration scheme is developed which leads to a tangent stiffness type method for rate dependent solids. Within the context of small strain theory numerical examples are presented showing application of the method to material behaviors ranging from elasticnonlinearly viscous to nearly rate independent. The adaptability of this rate dependent tangent modulus method to complex constitutive relations and to finite deformation analyses is also illustrated.