基于边界元法的压电裂纹尖端断裂参数的相互作用积分和修正裂纹闭合积分评估

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI:10.1109/SPAWDA.2016.7829983

Li Yun, J. Lei, Chuan-zeng Zhang

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引用次数: 0

摘要

本文分别用相互作用积分法(m积分法)和改进的裂纹闭合积分法(MCCI法)计算了压电裂纹的裂纹尖端场强因子。将双边界元法应用于压电裂纹模型，利用已有的解析解验证了m积分法和MCCI法得到的裂纹尖端断裂参数，并与经典位移外推法和j积分法得到的结果进行了比较。算例表明了m积分的精度和MCCI对压电裂纹问题的改进。

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Bem based evaluation of piezoelectric crack-tip fracture parameters using interaction integral and modified crack closure integral

In this paper, the crack-tip field intensity factors of a piezoelectric crack are respectively evaluated by an interaction integral (M-integral) and a modified crack closure integral method (MCCI). By applying the dual BEM to piezoelectric crack models, the crack-tip fracture parameters using M-integral and MCCI are verified by the existing analytical solutions and compared with the results by the classical displacement extrapolation and J-integral methods. Some examples are presented to show the high accuracy of M-integral and the improvement of MCCI for the piezoelectric crack problems.

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2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)

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