【摘要】 从理论上论述了不同模量问题的剪切弹性模量对数值计算收敛性的影响 ,提出了一种不仅同主应力符号而且同主应力大小有关的剪切弹性模量的确定方法 .在此基础上提出了加速收敛因子 η ,运用 η参与运算 ,使各种不同模量问题有限元计算的收敛速度加快 ,尤其是对大型复杂的、实际的不同模量问题效果更为明显 .更多还原

【Abstract】 This paper discusses the influence from the modulus of elasticity in the shear of different extension compression modulus problem to the convergence of the numerical calculation, and puts forword a method relating not only to the sign of the principal stress but also the the dimension of the principal stress to determine the modulus of elasticity in the shear. On the basis of this theory this paper puts forward a factor η for accelerating convergence, and using this η to join the numerical calculation of every different modulus problem makes the convergence velocity accelerate obviously, especially for the large scale complex and practical problem of different modulus.更多还原