On the modeling of the Taylor cylinder impact test for orthotropic textured materials: experiments and simulations |
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| Affiliation: | 1. Los Alamos National Laboratory, Los Alamos, NM 87545, USA;2. A.F. Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542, USA;1. Department of Mechanical Engineering, University of New Hampshire, Durham, NH 03824, USA;2. Mechanics of Materials Section, ExxonMobil Upstream Research Company, Houston, TX 77098, USA;3. Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;4. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;1. Université de Lyon, Ecole Centrale de Lyon, Laboratoire de Tribologie et Dynamique des Systèmes, UMR-CNRS 5513, 36 avenue Guy de Collongue, 69134 Ecully Cedex, France;2. AREVA NP, Tour AREVA, 1 place Jean Millier, 92084 Paris La Défense Cedex, France;1. School of Metallurgy and Materials, The University of Birmingham, Birmingham, United Kingdom;2. AWE, Aldermaston, Reading, Berkshire, United Kingdom;3. Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA |
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| Abstract: | ![]()
Taylor impact tests using specimens cut from a rolled plate of tantalum were conducted. The tantalum was experimentally characterized in terms of flow stress and crystallographic texture. A piece-wise yield surface was interrogated from an ODF corresponding to this texture assuming two slip system modes, in conjunction with an elastic stiffness tensor computed from the same ODF and single crystal elastic properties. This constitutive information was used in EPIC-95 3D simulations of a Taylor impact test, and good agreement was realized between the calculational results and the experimental post-test geometries in terms of major and minor side profiles and impact-interface footprints. |
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