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工程力学  2013 

压电压磁双层材料界面裂纹断裂特性进一步分析

DOI: 1000-4750(2013)06-0327-07, PP. 327-333

Keywords: 压电材料,压磁材料,I-型裂纹,界面裂纹,应力强度因子,能量释放率,压电材料,压磁材料,I-型裂纹,界面裂纹,应力强度因子,能量释放率

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Abstract:

该文利用积分变换和奇异积分方程技术研究压电压磁双材料界面裂纹在磁导、电位移和机械载荷作用下的二维断裂问题。本文仅考虑四种理想的裂纹面电磁边界条件即磁电不导通(情形1)、磁导通电不导通(情形2)、磁不导通电导通(情形3)和磁电导通(情形4)。导出了应力强度因子(SIF)和能量释放率(ERR)的表达式,给出了ERR的大量数值结果,并与已有结果进行了对比。研究成果对压电压磁多层复合结构的设计具有理论与应用价值。

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