Discrete dislocation plasticity analysis of size effects in single crystals Conference Paper uri icon

abstract

  • The effect of size and slip system configuration on the tensile stress-strain response of micron-sized planar crystals as obtained from discrete dislocation plasticity simulations is presented. The crystals are oriented for either single or symmetric double slip. With the rotation of the tensile axis unconstrained, there is a strong size dependence, with the flow strength increasing with decreasing specimen size. Below a certain specimen size, the flow strength of the crystals is set by the nucleation strength of the initially present Frank-Read sources. The main features of the size dependence are the same for both the single and symmetric double slip configurations.

published proceedings

  • Computational Plasticity: Fundamentals and Applications - Proceedings of the 8th International Conference on Computational Plasticity, COMPLAS VIII

author list (cited authors)

  • Deshpande, V. S., Needleman, A., & Van Der Giessen, E

complete list of authors

  • Deshpande, VS||Needleman, A||Van Der Giessen, E

publication date

  • December 2005