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工程力学  2014 

正交各向异性复合柱圆弧型循环对称界面裂纹

Keywords: 功能梯度材料,极正交各向异性材料,圆弧界面,循环对称裂纹,奇异积分方程

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Abstract:

讨论反平面载荷作用下空心复合柱的循环对称圆弧型裂纹问题。复合柱由两极正交各向异性功能梯度弹性层粘接而成。采用分离变量将这个混合边值问题转化为Cauchy核奇异积分方程,并用Lobatto-Chebyshev求积法对积分方程进行数值求解,得到了应力强度因子的数值解。分析了梯度非均匀参数,几何与材料参数变动等对应力强度因子的影响。

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