Vol. 1, No. 1, 2006

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Yield functions and plastic potentials for BCC metals and possibly other materials

Richard M. Christensen

Vol. 1 (2006), No. 1, 183–200

Yield functions and plastic potentials are expressed in terms of the invariants of the stress tensor for polycrystalline metals and other isotropic materials. The plastic volume change data of Richmond is used to evaluate the embedded materials properties for some bcc metals and one polymer. A general form for the plastic potential is found that is intended to represent and cover a wide range of materials types.

yield functions, plastic potentials, BCC Metals
Received: 28 October 2005
Accepted: 6 December 2005
Published: 1 May 2006
Richard M. Christensen
Lawrence Livermore National Laboratory
P.O. Box 808, L–356
Livermore CA 94550
Department of Aeronautics and Astronautics
Stanford University
Stanford, CA 94305