带有裂纹的受扭圆柱薄壳的临界应力

Critical Stress of Twisting Moment Acting on Cylindrical Thin Shell with Crack

采用断裂力学的最大周向应力理论 ,推导出带有穿透裂纹的圆柱薄壳在扭矩作用下裂纹开始扩展的开裂角和开裂应力 ;建立了Ⅰ -Ⅱ复合型裂纹的断裂准则 通过分析该圆柱薄壳的破坏形态 。

The theory on crack mechanics of maximum circumferential stress is used for deducing cracking angle and cracking stress of the cylindrical thin shell with crack under the action of twisting moment,and a crack criterion on Ⅰ-Ⅱ compound crack is established.By analysing failure form of the cylindrical thin shell,critical stress is determined.