Application of a failure analysis to powder forming processes

Abstract

In this paper, an h-adaptive analysis for the mixed finite element solution of powder forming problems is presented involving localization due to material instability. A remeshing strategy is employed to compute the distribution of required element size using the estimated error distribution. Once the new element size and its alignment have been indicated, an automated procedure is used to construct the mesh according to a predetermined size and elongation distribution. The numerical results were obtained for a multi-level component to indicate the failure surfaces and evaluate the ultimate capacity of material.