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首页> 外文期刊>Composite Structures >Effect of characteristics and distribution of porosity on electro-elastic analysis of laminated vessels with piezoelectric face-sheets based on higher-order modeling
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Effect of characteristics and distribution of porosity on electro-elastic analysis of laminated vessels with piezoelectric face-sheets based on higher-order modeling

机译：基于高阶建模的压电脸部薄层叠层电弹性分析特性及分布的特性及分布

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摘要

Electro-elastic analysis of a cylindrical sandwich pressure vessel including a porous core and two integrated piezoelectric face-sheets are analytically studied in this work. Third-order shear deformation theory is employed for description of displacement field along the thickness direction. The piezoelectric layers are subjected to applied electric potentials. The principle of virtual work is used to derive the governing equation of electro-elastic bending. The governing equation are solved for clamped-clamped boundary condition with short circuit electrical condition. The numerical results including deformation, stress analysis, and electric potential distribution are plotted in terms of porosity coefficient, various types of porosity, applied electric potential, and parameters of Pasternak's foundation. One can see that maximum displacement and stress components are obtained for asymmetry pattern while the minimum displacement and stress components are obtained for symmetry pattern. The numerical results indicate that with increase of porosity coefficient, the radial and axial displacements are increased while all stress components are decreased. Investigation on the effect of applied electric potential indicate that although increase of applied electric potential leads to significant increase of radial displacement and maximum electric potential, it does not change the radial displacement and all stress components.
机译：在这项工作中，在该工作中分析了包括多孔芯和两个集成压电面板的圆柱形夹层压力容器的电弹性分析。采用三阶剪切变形理论用于沿厚度方向的位移场描述。压电层经受施加的电位。虚拟工作原理用于导出电弹性弯曲的控制方程。具有短路电气条件的夹紧夹紧边界条件来解决控制方程。根据孔隙系数，各种类型的孔隙，应用电位和Pasternak基础的参数，绘制了数值结果，包括变形，应力分析和电势分布。可以看出，对于不对称图案，可以获得最大位移和应力分量，而用于对称图案获得最小位移和应力分量。数值结果表明，随着孔隙率系数的增加，径向和轴向位移增加，而所有应力分量都降低。对施加电位效应的研究表明，尽管施加电势的增加导致径向位移和最大电位的显着增加，但它不会改变径向位移和所有应力组分。

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