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计算功能梯度压电材料能量释放率的修正J积分法

A Modified J-Integral Method for Calculating Energy Release Rates for Functionally Graded Piezoelectric Materials
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摘要 功能梯度压电材料的非均匀材料特性将导致标准J积分失去与路径无关的特性.为此,提出了修正J积分来计算裂纹尖端的能量释放率,该修正J积分在功能梯度压电材料中具有与积分路径无关的性质.以功能梯度压电板的平面问题为例,给出了一些数值算例以说明修正J积分在计算功能梯度压电材料能量释放率方面的优越性. Due to the influence of material inhomogeneity in functionally graded piezoelectric materials (FGPMs), the standard J-integral loses the path-independence. This paper presented a modified J-integral, which retains the path-independence in FGPMs, for calculating the energy release rate. Some numerical examples were provided to demonstrate the superiority of the modified J-integral over the standard J-integral.
作者 汪伟 陈建 刘正兴
机构地区 上海交通大学船舶海洋与建筑工程学院
出处 《上海交通大学学报》 EI CAS CSCD 北大核心 2005年第5期805-809,共5页 Journal of Shanghai Jiaotong University
基金 国家自然科学基金资助项目(10132010) 青年自然科学基金资助项目(10302020)
关键词 功能梯度压电材料 J积分 路径无关性 面积分 functionally graded piezoelectric materials (FGPMs) J-integral path-independence domain integral
分类号 O346.1 [理学—固体力学]
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参考文献13

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上海交通大学学报
2005年 第5期

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