内压椭球壳塑性变形的发生部位与扩展过程分析

OCCURRING AND EXPANDING OF THE PLASTIC DEFORMATION IN ELLIPSOIDAL SHELLS SUBJECTED TO INTERNAL PRESSURE

对内压椭球的应力分布作了图形描述．指出椭球壳上一点的应力状态只与壳体的轴比λ和该点在壳体上的位置有关，并进一步分析了内压椭球壳的塑性变形的发生部位及其扩展过程．

The stress distribution in ellipsoidal shells subjected to internal pressure is deseribad,it is pointed out that the stress state of a point in elllpsoidal shell is decided by A, the ratio of the length of the non-revolving axis to that of the revolving axis, and the position of the point in the shell. And the ocurring and expanding of the plastic deformation in ellipsoidal shells subjected to internal pressure are further analyzed.