New accurate two-noded shear-flexible curved beam elements

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• 作者：C. Zhang and S. Di
• 关键词：Keywords  ; Curved beam ; Displacement element ; Hybrid stress element ; Nodeless degrees of freedom
• 刊名：Computational Mechanics
• 出版年：2003
• 出版时间：January 2003
• 年：2003
• 卷：30
• 期：2
• 页码：81-87
• 全文大小：164 KB

文摘

 There are two purposes of this work. One is to present two accurate two-noded finite elements which are derived from the potential energy principle and the Hellinger–Reissner functional principle respectively. The second is to show the successful application of the internal displacement parameters in developing a high-order related displacement-rotation interpolation field. Because the derived interpolation field is capable of accurately modeling deformation modes in extreme thin curved beams and nearly straight beams, both shear locking and membrane shocking are avoided. Several standard numerical tests display superior behaviors of the present elements.