direct deflection method

The stability of macrocrack in engineering was analyzed based on LEFM(linear elastic fracture mechanics) model;and the crack tip′s stress intensity factor was calculated by displacement direct method.

基于线弹性断裂力学模型对工程中存在的宏观裂缝进行稳定性分析,采用位移直接法计算缝端应力强度因子。

Furthermore, a actual electrical and mechanical system is systematically studied by using the direct phase method developed here.

接着我们发展了一种直接相位法，通过它对一个实际的机电系统进行了系统的研究。