| 球壳与柱壳之功能梯度压电涂层的热效应分析 |
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| 引用本文： | 舒小平.球壳与柱壳之功能梯度压电涂层的热效应分析[J].中国机械工程,2011,22(24). |
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| 作者姓名： | 舒小平 |
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| 作者单位： | 淮海工学院,连云港,222005 |
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| 基金项目： | 江苏省高等学校自然科学基金资助项目(07KJB130004) |
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| 摘 要： | 针对以球壳和圆柱壳为基体的功能梯度压电涂层,由多场耦合控制方程和层间连续条件导出递推关系,建立了显式的力-电-热多场耦合解。对于多层功能梯度压电涂层,此解为精确解;对于连续功能梯度压电涂层,可将涂层分为若干层,只要层数取得足够大,所得的近似解将收敛于精确解。研究表明：压电效应对基体的应力影响可以忽略,但对涂层的应力影响非常显著;增加层数并不能有效降低最大应力,但增加层数可显著减小相邻层层间周向应力的突变幅度,减小层间应力集中;然而涂层与基体之间的界面径向应力却随层数的增大而使界面强度弱化。
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| 关 键 词： | 涂层 压电 功能梯度材料 多场耦合 热残余 壳体 |
Thermal Response of Functionally Graded Piezoelectric Coatings on Sphere and Cylinder Shells |
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| Shu Xiaoping Huaihai Institute of Technology,Lianyungang,Jiangsu.Thermal Response of Functionally Graded Piezoelectric Coatings on Sphere and Cylinder Shells[J].China Mechanical Engineering,2011,22(24). |
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| Authors: | Shu Xiaoping Huaihai Institute of Technology Lianyungang Jiangsu |
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| Affiliation: | Shu Xiaoping Huaihai Institute of Technology,Lianyungang,Jiangsu,222005 |
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| Abstract: | By solving the piezothermoelastic control equations and using the recursive relations between layers,the explicit piezothermoelastic solutions were deduced for functionally graded piezoelectric coatings on hollow spheres and circular cylinders.The solutions are accurate for multi-layered functionally graded piezoelectric coatings.If a continuous functionally graded piezoelectric coating was divided to many layers,a approximate solution will be obtained and converged to the accurate solutions when the number... |
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| Keywords: | coating piezoelectricity functionally graded material multi-field coupling thermal residual shell |
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