偏斜应变能J<sup>*</sup>积分及应用

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偏斜应变能J^*积分及应用

Department of Civil Engineering and Applied Mechanics, Sichuan University, Chengdu 610065, P. R. China

摘要: 引进偏斜应变能的概念，对平面裂纹起裂扩展问题进行了讨论，给出了一个与路径无关的J*积分，同时对其守恒性给予了严格的证明，通过Ⅰ型裂纹的应用，其结果与现行公开发表的文献或手册结果一致．
- 偏斜应变能 /
- J~*积分 /
- 守恒性 /
- 应力强度因子
Abstract: First the deviator strain energy is introduced,then the problem of plane-crack critical growth was discussed,a path independent line integral J^* was defined,furthermore its conservation was proved strictly.As application examples,mode-Ⅰ stress intensity factors of cracked beam were obtained with present approach.The results were shown to agree well with those available in the open literature.
- deviator strain energy /
- J^* integral conservation /
- stress intensity factor /

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