The numerical results indicate that FEM is efficient to analyze stress singularity, and the stress singularity always exists in the hardeningphase …
在材料硬化阶段，含层间裂纹的层板裂尖前缘应力奇异性总是存在的；
2
In this paper, optimization of phase change parameter and hardening parameter of closed hierarchical single surface model is studied.
对封闭型分级单屈服面模型参数中的阶段改变参数和硬化参数的优化进行了研究。
3
This paper introduces the design of taper bore flame hardening machine, fixtures, nozzles block and the methods to determine hardening temperature and phase balancing time.