Fracture Analysis for Torsion Problems of a Composite Cylinder With Curvilinear Cracks
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摘要: 研究含任意曲线裂纹的复合圆柱体的Saint-Venant扭转,将内外材料的交界面视为一边界,将问题划归为内、外边界和裂纹上的积分方程的求解.提出了新的边界元数值方法,分别对含有直线裂纹和曲折裂纹的典型问题进行了数值计算,并与文献中数据结果进行了比较,证明了该文方法的正确性和有效性.
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关键词:
- Saint-Venant扭转 /
- 复合柱体 /
- 曲线裂纹 /
- 边界积分方程 /
- 应力强度因子
Abstract: The Saint-Venant torsion problems of a composite cylinder with curvilinear crack were investigated.By means of considering the bimaterial interface as a boundary of outer bar or inner one,the problem was reduced to solving the boundary integral equations on crack,external boundary and interface.Using the new boundary element method,some typical torsion problems of a composite cylinder irnolving a straight or kinked crack were calculated.The obtained results were compared with the literature tada to prove the validity and applicability of the present method. -
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