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先分析理想裂纹面电边界条件(包括导通型裂纹和不导通型裂纹),然后分析缺陷的厚度及其对尖端场的影响,用封闭形式的解表示出了缺陷厚度的影响.结果指出,裂纹长厚比对计算结果是有影响的,除非裂纹极扁,不可通裂纹边界条件可以给出合理的结果,而可通边界条件只有在一些限制条件下才适用.
The boundary conditions of ideal crack (including on-crack and non-on-crack) are firstly analyzed and then the thickness of the defect and its influence on the tip field are analyzed. The closed-form solution is used to show the influence of the defect thickness. , The crack length-thickness ratio has an influence on the calculation results. Unless the crack is very flat, the boundary conditions of the non-through crack can give reasonable results, and the pass-through boundary conditions are only applicable under some limitations.