Shear band formation due to voidnucleation and growth were successfully simulated in a specimen of geomaterial under plane stress compression and tension by the model respectively.
采用该模型，成功地对平面应力条件下岩土材料单轴受压和单轴受拉试件的局部化破坏分别进行了数值模拟。
2
Based on the analysis procedure proposed in this work, the critical nucleation strain and relative void volume at the critical nucleation strain were determined.
并根据本研究提出的分析程序，确定了空穴的临界形核应变以及在形核应变时的相对空穴体积。
3
The results show that the crack is formed by acting of center void and intergranular cracks. Some technic modifcation of the smelting process is raise to prevent nucleation of the cracks.