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首页> 外文期刊>International journal of mechanics and materials in design >A moving mode-III crack in a functionally graded piezoelectric strip
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A moving mode-III crack in a functionally graded piezoelectric strip

机译:功能梯度压电条中的移动III型裂纹

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摘要

In this paper, the problem of a functionally graded piezoelectric strip with a constant-velocity Yoffe-type moving crack is considered. By using the Fourier transforms, the problem is first reduced to dual integral equations and then into Fredholm integral equations of the second kind. The electroelastic field near the crack tip is obtained for electrical impermeable boundary conditions and electrical permeable boundary conditions, respectively. The results obtained show that the gradient of the material properties can increase or decrease the magnitudes of the stress intensity factors, and the velocity can disturb the stress distribution near the crack tip.
机译:在本文中,考虑了具有恒定速度Yoffe型运动裂纹的功能梯度压电条的问题。通过使用傅立叶变换,首先将问题简化为对偶积分方程,然后将其简化为第二类Fredholm积分方程。分别针对电不渗透边界条件和电渗透边界条件获得裂纹尖端附近的电弹性场。所得结果表明,材料性能的梯度可以增大或减小应力强度因子的大小,而速度可以扰动裂纹尖端附近的应力分布。

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