摘要
本文利用全息双曝光法,连续观察和分析了在拉伸载荷作用下LF21铝板试件裂纹尖端塑性区的产生和扩展过程,并按表面塑性区的形状划分了三个不同阶段,同时利用有限元程序对此进行了计算,并将两者的结果进行了对比分析。
The continuous development process of plastic--xzone of aluminium sheet crack-tip has been observed and analyzed. Three types of plastic--zones are diyided according to the picture of plastic--zones on the surface of the aluminium sheet. The plastic--zones have been calculated also by the fini- te element method. The results of experimew and calculation are compa- red.
