在简单加载条件下，研究幂强化材料和超弹性材料组合球体中的动态孔穴生成和增长问题。
The bifurcation problem of dynamical formation and growth of cavity in a sphere composed of a power hardening material and a hyper-elastic material is discussed in this paper.
以矩形柱面扁壳为模型，从小变形、简单加载的前提条件出发，推导了矩形柱面扁壳切边后曲面方向回弹的理论解。
Based on the assumptions of small deformation and simple load, an analytical model of cylinder shallow shell is constructed, and the curve direction spring-back after trimming are given theoretically.
复杂应力条件下的黄土损伤演化方程的表现形式与简单加载条件下的完全相同，区别只是在于损伤参量的影响因素不同。
Although the expressional form of damage evolution equation in complicated stress condition is the same as that in simple load condition, the influence factors are different of the damage parameters.
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