Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
771878 | Engineering Fracture Mechanics | 2008 | 17 Pages |
Abstract
First, we summarize our convex optimization method to solve the static approach of limit analysis. Then, we present the main features of a quadratic extension of a recently proposed mixed finite element method of the kinematic approach. Both methods are applied to obtain precise solutions to a forming problem with Gurson and Drucker–Prager materials. Finally, in order to analyze the criterion of “Porous Drucker–Prager” materials, the Gurson micro–macro model involving a Drucker–Prager matrix containing cylindrical cavities is investigated. Comparing previous results shows, among other things, a similarity in the compression case not always observed for the “Porous von Mises” material between cylindrical and spherical cases.
Related Topics
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Authors
F. Pastor, Ph. Thoré, E. Loute, J. Pastor, M. Trillat,