Introduction - If you have any usage issues, please Google them yourself
The crystal constitutive subroutine written by Huang Yonggang. The single-crystal plastic mechanics was introduced into the material user subroutine of the ABAQUS finite element program, which included the description of the small deformation theory and the strict finite strain and rotation theory. The inelastic deformation of a single crystal originates from the crystal plane slip, where it is assumed to conform to Schmitt's law. The various self- and potential reinforcement relationships between the shear stress and the strain in the slip system appear and are introduced as options in the subroutine