Shell–tensionless foundation interaction and nonlinear thermoelastic stability analysis of laminated composite cylindrical panels

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• 作者：Danial Panahandeh-Shahraki (1)
  Hamid Reza Mirdamadi (1)
  
• 刊名：Acta Mechanica
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：225
• 期：1
• 页码：131-149
• 全文大小：824 KB
• 作者单位：Danial Panahandeh-Shahraki (1)
  Hamid Reza Mirdamadi (1)
  
  1. Department of Mechanical Engineering, Isfahan University of Technology, 84156-83111, Isfahan, Iran
  
• ISSN：1619-6937

文摘

In this paper, the thermal buckling behavior of composite laminated curved panels on one-sided foundation is addressed. Governing equations of shell stability are derived based on classical shell theory (CST) and minimum total potential energy. They are solved by a hierarchical Rayleigh–Ritz technique. A part of the contribution is formulating effects of curvature and composite materials in nonlinear analysis of stability for cylindrical panels surrounded by one-sided foundations subjected to thermal loading. The other part is related to the results from parametric studies. In this work, the effects of parameters such as panel aspect ratio thickness, central angle, degree of material orthotropy, and foundation stiffness are investigated. It is observed that with an increase in panel aspect ratio the influence of one-sided constraint on the critical temperature is reduced for a flat panel, while it is magnified for a curved panel. The effect of nonlinear foundation on one-sided buckling of curved panels is highly dependent on parameters such as central angle, aspect ratio, thickness, and degree of foundation stiffness, such that any change in each parameter might have direct influence and severe change on the penetration of the panel into the foundation. The results for simpler case studies are compared and validated with those available in the literature.