Based on the crystal plasticity theory and mathematical theory of statistics, the relation of flow stress fluctuation quantity to grain dimension as well as billet dimensions was built.
基于晶体塑性理论及数理统计理论，建立了流动应力波动幅度与晶粒尺寸和坯料几何尺寸间的关系。
2
We discuss the dynamics problems of ideal rigid-plastic material in the flow theory ofplasticity in this paper.
本文讨论了塑性流动理论中的理想刚塑性材料的动力学问题。
3
The constitutive equation in the present method is based on flow theory ofplasticity to consider the loading history, while deformation theory of plasticity in the classical inverse analysis method.