Open Access

ARTICLE

Porous Metals with Developing Anisotropy: Constitutive Models, Computational Issues and Applications to Deformation Processing

M. Kailasam¹, N. Aravas², P. Ponte Castañeda³

1 Hibbitt, Karlsson and Sorensen, Inc., 1080 Main St., Pawtucket, RI 02860, USA
2 Department of Mechanical and Industrial Engineering, University of Thessaly, 38334 Volos, Greece
3 Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104-6315, USA

Computer Modeling in Engineering & Sciences 2000, 1(2), 105-118. https://doi.org/10.3970/cmes.2000.001.265

Abstract

A constitutive model for a porous metal subjected to general three-dimensional finite deformations is presented. The model takes into account the evolution of porosity and the development of anisotropy due to changes in the shape and the orientation of the voids during deformation. A methodology for the numerical integration of the elastoplastic constitutive model is developed. Finally, some sample applications to plane strain extrusion and compaction of a porous disk are considered using the finite element method.

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