Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (8): 1067-1076.doi: https://doi.org/10.1007/s10483-016-2118-9

• 论文 • 上一篇    下一篇

Electromechanical responses and instability of electro-active polymer cylindrical shells

Jiusheng REN1, Chengmin WANG2   

  1. 1. Department of Mechanics, Shanghai Key Laboratory of Mechanics in Energy and Environment Engineering, Shanghai University, Shanghai 200444, China;
    2. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
  • 收稿日期:2015-09-18 修回日期:2016-03-04 出版日期:2016-08-01 发布日期:2016-08-01
  • 通讯作者: Jiusheng REN E-mail:jsren@shu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (No. 10772104) and the Shanghai Leading Academic Discipline Project (No. S30106)

Electromechanical responses and instability of electro-active polymer cylindrical shells

Jiusheng REN1, Chengmin WANG2   

  1. 1. Department of Mechanics, Shanghai Key Laboratory of Mechanics in Energy and Environment Engineering, Shanghai University, Shanghai 200444, China;
    2. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
  • Received:2015-09-18 Revised:2016-03-04 Online:2016-08-01 Published:2016-08-01
  • Contact: Jiusheng REN E-mail:jsren@shu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 10772104) and the Shanghai Leading Academic Discipline Project (No. S30106)

摘要:

Based on the theories of finite deformation elasticity, electromechanical responses and instability of an incompressible electro-active polymer (EAP) cylindrical shell, which is subjected to an internal pressure and a static electric field, are studied. Deformation curves and distribution of stresses are obtained. It is found that an internal pressure together with an electric field may cause the unstable non-monotonic deformation of the shell. It is also shown that a critical thickness for the shell exists, and the shell may undergo the unstable deformation if its thickness is less than this critical value. In addition, the effects of the electric field, axial stretch, thickness, and internal pressure on the instability of the shell are discussed.

关键词: critical thickness, electro-active polymer (EAP), non-monotonic, electromechanical instability, finite deformation elastic theory

Abstract:

Based on the theories of finite deformation elasticity, electromechanical responses and instability of an incompressible electro-active polymer (EAP) cylindrical shell, which is subjected to an internal pressure and a static electric field, are studied. Deformation curves and distribution of stresses are obtained. It is found that an internal pressure together with an electric field may cause the unstable non-monotonic deformation of the shell. It is also shown that a critical thickness for the shell exists, and the shell may undergo the unstable deformation if its thickness is less than this critical value. In addition, the effects of the electric field, axial stretch, thickness, and internal pressure on the instability of the shell are discussed.

Key words: critical thickness, electro-active polymer (EAP), non-monotonic, electromechanical instability, finite deformation elastic theory

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