资料为晶体塑性umat程序，为初学者提供了详细代码来帮助学习。(Data for crystal plasticity UMAT program, provides detailed code for beginners to help learning.)

基于晶体塑性自洽理论 vpsc 模拟多晶体塑性变形的织构演化(Texture evolution of polycrystalline plastic deformation simulated by vpsc based on crystal plasticity self consistent theory)