发生塑性剪断时，危险点位于应力场中等效应力取极大值处，断裂方向均为危险点处最大剪应力作用面方向。
Accordingly, the fracture direction is in the direction of the dangerous points where the maximum shear stress action face.
发生塑性剪断时，危险点位于应力场中等效应力取极大值处，断裂方向均为危险点处最大剪应力作用面方向。
Accordingly, the fracture direction is in the direction of the dangerous points where the maximum shear stress action face.
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