Abstract

The Element-Based Lagrangian Formulation of a 9-node resultant-stress shell element is presented for the isotropic and anisotropic composite material. The effect of the coupling term between the bending strain and displacement has been investigated in the warping problem. The strains, stresses and constitutive equations based on the natural co-ordinate have been used throughout the Element-Based Lagrangian Formulation of the present shell element which offers an advantage of easy implementation compared with the traditional Lagrangian Formulation. The element is free of both membrane and shear locking behavior by using the assumed natural strain method such that the element performs very well in thin shell problems. In composite plates and shells, the transverse shear stiffness is defined by an equilibrium approach instead of using the shear correction factor. The arc-length control method is used to trace complex equilibrium paths in thin shell applications. Several numerical analyses are presented and discussed in order to investigate the capabilities of the present shell element. The results showed very good agreement compared with well-established formulations in the literature.

주제어

#9-node resultant shell element   #Element-based Lagrangian Formulation   #laminated composite plates and shells   #assumed strain method   #arc-length control method  

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이 논문을 인용한 문헌 (5)

1. Lee, Won-Hong ; Han, Sung-Cheon ; Park, Weon-Tae 2010. "Buckling Analysis of Laminated Composite Plates under the In-plane Compression and Shear Loadings" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 11(12): 5199~5206  원문보기 상세보기
2. Han, Sung-Cheon ; Park, Weon-Tae ; Lee, Won-Hong 2010. "Non-linear Analysis of Laminated Composite Plates with Multi-directional Stiffness Degradation" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 11(7): 2661~2669  원문보기 상세보기
3. 2010. "" Structural engineering and mechanics : An international journal, 34(1): 97~107  상세보기
4. 2011. "" Structural engineering and mechanics : An international journal, 40(2): 191~213  상세보기
5. Han, Sung-Cheon 2012. "Geometrically Nonlinear Analysis of Hinged Cylindrical Laminated Composite Shells" 복합신소재구조학회 논문집 = Journal of the Korean Society for Advanced Composite Structures, 3(2): 1~10  원문보기 상세보기