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总览 评价 岳彦美 1, , 徐凯宇 2,* ( 1、 上海大学上海市应用数学和力学研究所; 2、 上海大学理学院力学系; ) 摘要: 本文给出了新的考虑表面效应的压电梯度弹性模型,推导出了基本方程和边界条件。分析了表面效应对含孔压电材料反平面电力耦合的影响
岳彦美1,, 徐凯宇2,*
(
1、上海大学上海市应用数学和力学研究所; 2、上海大学理学院力学系; )
摘要:
本文给出了新的考虑表面效应的压电梯度弹性模型,推导出了基本方程和边界条件。分析了表面效应对含孔压电材料反平面电力耦合的影响。结果表明孔边表面层厚度对力电耦合有显著影响,而内部长度尺度参数只对电场分布影响比较显著,但对应力分布影响非常有限。
关键词:
梯度弹性,表面效应;反平面问题
YUE Yanmei1,, XU Kaiyu2,*
(
1、Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai,200444; 2、Department of Mechanics, College of Science, Shanghai University,Shanghai,200444; )
Abstract:
A new model of gradient elasticity for the piezoelectric material with surface effects is introduced to describe gradient effects and surface effects in this paper. Then this new formulation is used to solve the anti-plane problem of an infinity piezoelectricity with micro-hole. The numerical results reflect that the surface/interface layer thickness has great effect on the electromechanical coupling around the micro-hole. While the internal length scales only have significant effect on the electric field distributions. Theirs effect on stresses is really very limited.
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