应用传统强度理论和细观力学方法对几种韧性材料在复合载荷条件下的断裂机理、启裂位置、开裂方向进行了实验分析和应力场计算。
In this paper, fracture mechanism, position and direction of crack initiation of mixed mode fracture in several ductile materials are tested, and stress distributions of which are analyzed.
凹模在使用过程中，由于交变载荷的作用，使碳化物的棱角处应力集中出现裂纹，最终导致凹模开裂。
The crack appears at the edge angle due to stress concentration caused by alternating load, which finally leads to the fissuring of die plate.
介绍了改进PVC管材性能的方法，简介了PVC-M管材优异的冲击性能、抗开裂性能、耐点载荷能力和可焊性。
Measures to improve the properties of PVC pipes were introduced. The excellent impact property, anti-fracturing property, anti-point loading capacity and weldability of PVC-M pipes were introduced.
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