A modified non-schmid crystal plasticity based constitutive equation, considering the size effects on yield stress and hardening evolution, was proposed and implemented in an elastic crystal plastic finite element analysis code. The quasi-simple shear FE analyses and experiments by employing different size were executed to demonstrate size effects on stress-strain curves and strain distributions. An experiment based dislocation free pass length was introduced in the hardening evolution

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... FE analyses results of plastic deformation behavior have shown good agreement with experimental ones. Finally, the availability of this constitutive equation was confirmed.