A Model for High-Strain-Rate Deformation of Uranium-Niobium Alloys [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2003. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 40 pages : digital, PDF file
- Additional Creators:
- Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- A thermodynamic approach is used to develop a framework for modeling uranium-niobium alloys under the conditions of high strain rate. Using this framework, a three-dimensional phenomenological model, which includes nonlinear elasticity (equation of state), phase transformation, crystal reorientation, rate-dependent plasticity, and porosity growth is presented. An implicit numerical technique is used to solve the evolution equations for the material state. Comparisons are made between the model and data for low-strain-rate loading and unloading as well as for heating and cooling experiments. Comparisons of the model and data also are made for low- and high-strain-rate uniaxial stress and uniaxial strain experiments. A uranium-6 weight percent niobium alloy is used in the comparisons of model and experiment.
- Published through SciTech Connect., 05/01/2003., "la-14034-ms", and T.A.Mason; F.L.Addessio; L.C.Brinson; Q.H.Zuo.
- Type of Report and Period Covered Note:
- Topical; 05/01/2003 - 05/01/2003
- Funding Information:
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