Ductile damagemechanicsmodel and rigid finite element method was adopted to simulate the sheet metal shearing process.
应用韧性损伤力学模型以及刚塑性有限元法，分析了金属板材剪切断面变形的过程。
2
Fatigue damage estimation of the tendons was made using fracture mechanics approach, establishing the fracture crack growth rate model and limit state equations for failure modes.
疲劳寿命的计算采用断裂力学方法，建立疲劳裂纹扩展模型和失效模式的极限状态方程。
3
An anisotropic damagemodel for concrete subjected to compressive fatigue load is developed based on continuum damagemechanics and the concept of boundary surface.