Application of faceted yield surfaces for simulating compression tests of textured materials [electronic resource].
- Washington, D.C. : United States. Dept. of Defense, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 9 pages : digital, PDF file
- Additional Creators:
- Los Alamos National Laboratory
United States. Department of Defense
United States. Department of Energy. Office of Scientific and Technical Information
- Constitutive modeling used for most forming calculations assume an isotropic yield function with isotropic hardening. This assumption usually takes the form of an isotropic elastic stiffness tensor, a realistic flow stress model and a von Mises yield function. Real materials deviate from isotropy both in elasticity and plasticity. The calculations described here relax the assumptions of isotropic elasticity and plasticity by utilizing direct measurements of the elastic stiffness tensor and anisotropic representations of yield surfaces, in particular surfaces tessellated from direct measurements of material texture. This effort validates the use of such constitutive modeling by simulating quasi-static, uniaxial stress compression and Taylor Cylinder impact, and comparing their cross-sectional ``footprints`` to experimental data.
- Published through SciTech Connect.
4. international conference on metallurgical and materials applications of shock-wave and high-strain-rate phenomena, El Paso, TX (United States), 6-10 Aug 1995.
Gray, G.T. III; Wright, S.I.; House, J.W.; Maudlin, P.J.
- Funding Information:
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