At the same time, the method of time-varying crossover probability factor was adopted to improve the global searching ability and convergence speed of MDE.
同时，采用时变交叉概率因子的方法以提高算法的全局搜索能力和收敛速率。
The corresponding calculation results of different contact stiffness values are listed and the convergence is analyzed, and the numerical recursive method of contact stiffness factor is put forward.
列举不同接触刚度取值对应的有限元计算结果并分析结果的收敛性，提出了接触刚度因子的数值递推法。
The convergence problem of boundary collocation method used to calculate the stress intensity factor is also investigated.
还探讨了边界配置法求应力强度因子时的收敛性问题。
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