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利用平面等效方法 ,将轴对称币状裂纹问题转化平面裂纹问题 ,由此给出复合材料内币状I型裂纹的桥联积分控制方程。对权函数法应用于求解币状裂纹问题的可行性提出质疑 ,并给出修正的建议。然后对币状I型裂纹桥联问题给予了断裂力学分析。利用一种新的分段插值方法求解了桥联积分控制方程。针对该积分方程提出了一种近似分析解法 ,其结果与数值结果符合得相当好。
The plane equivalent method is used to convert the axisymmetric coin-shaped crack problem into a plane crack problem, thus a bridge integral integral equation for the coin-shaped I-type crack in the composite material is obtained. Questioning the feasibility of the weight function method for solving the problem of currency cracks, and giving some suggestions for amendment. Then, the fracture mechanics analysis of the coin type I crack bridging problem is given. A new piecewise interpolation method is used to solve the bridge integral control equations. An approximate analytic solution is proposed for the integral equation. The result is in good agreement with the numerical result.