满足断裂过程区裂纹张开位移条件应力函数的半解析解法
摘要
Based on the Duan-Nakagawa model, with the weighted integral method, a semi-analytical method for stress functions meeting crack opening displacements in fracture process zones was proposed. The weighted function was determined by means of the boundary selected point method and the superposition of analytical functions with the same crack length but different fracture process zone lengths, to meet the given crack opening displacement in the fracture process zone, and then the final stress function and displacement function can be obtained with the weighted integral method. As an example, a special analytical solution for a double edge notched plate under Mode-I loading was derived, and the tensile strain softening curve and the fracture energy were obtained.