线弹簧模型柔度与裂纹开裂角之间的关系

A RELATIONSHIP BETWEEN THE INITIATION ANGLE AND COMPLIANCE OF LINESPRING MODE IN FRACTURE MECHANICS

利用Ｒｉｃｅ和Ｌｅｖｙ提出的决定裂纹开裂角的线弹簧模型，根据最大能量释放率理论，建立断裂力学中线弹簧模型柔度与复合型裂纹开裂角之间的关系，分析讨论了开裂角对柔度变化的影响。通过柔度变化，可确定含有裂纹的构件在复杂荷载作用下的裂纹起裂方向。

This paper presented a relationship between the compliance of linespring mode and the initiation angle of mixedmode crack based on the principle of maximum energy release rate. The effects of initiation angle on the changes of compliance were also discussed.The changes of compliance may be used to determine the direction of initiation of crack.