Buckling analysis of Levy-type orthotropic stiffened plate and shell based on different strain-displacement models

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• 作者：Eugenio Ruocco^a ; ^{eugenio.ruocco@unina2.it} ; Vincenzo Mallardo^b
• 关键词：Buckling ; Orthotropic stiffened plates ; Levy-type approach ; Von Ká ; rmá ; n model ; Koiter&ndash ; Sanders model ; Finite strip method
• 刊名：International Journal of Non-Linear Mechanics
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：50
• 期：Complete
• 页码：40-47
• 全文大小：601 K

文摘

In the present work a model able to predict the buckling behavior of thin, orthotropic, stiffened plates and shells subject to axial compression is proposed. In the context of the Kirchhoff-Love plate theory and making use of different strain-displacement models - namely the von K¨¢rm¨¢n model, the Koiter-Sanders shell model, an enhanced von K¨¢rm¨¢n model and a spurious model commonly adopted in literature - the equilibrium equations have been solved by the Levy-type approach. The results obtained highlight the influence of each non-linear strain-displacement term and show that the von K¨¢rm¨¢n model can noticeably overestimate the buckling load when the critical mode involves significant in-plane displacements.