Wrinkle and tensioncrack may occur in the stamping process of bucket, a curved surface part.
在板材成形中，起皱和拉裂是主要缺陷，而压边力是控制板材成形的重要工艺参数。
2
In addition, when there are tensioncrack and water in the slope, the critical inclination has relations with the position of crack and the level of water.
此外，当边坡中有张裂缝和水时，滑面的临界倾角还与张裂缝的深度和水位高度有关。
3
Based on the hierarchical block element method presented earlier, a new concept of subordinate cover and a method to simulate the tensioncrack in rocky block are proposed.