Modeling Shock Induced Plasticity in Copper Single Crystal: Numerical and Strain Localization Issues

Abstract:

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Multiscale dislocation dynamics plasticity (MDDP) simulations are carried out to address the following issues in modeling shock-induced plasticity: 1- the effect of finite element (FE) boundary conditions on shock wave characteristics and wave-dislocation interaction, 2- the effect of the evolution of the dislocation microstructure on lattice rotation and strain localization. While uniaxial strain is achieved with high accuracy using confined boundary condition, periodic boundary condition yields a disturbed wave profile due the edge effect. Including lattice rotation in the analysis leads to higher dislocation density and more localized plastic strain.

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Periodical:

Edited by:

Maher Soueidan, Mohamad Roumié and Pierre Masri

Pages:

193-196

DOI:

10.4028/www.scientific.net/AMR.324.193

Citation:

M. Shehahdeh "Modeling Shock Induced Plasticity in Copper Single Crystal: Numerical and Strain Localization Issues", Advanced Materials Research, Vol. 324, pp. 193-196, 2011

Online since:

August 2011

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$35.00

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