Geometrical Nonlinear Analysis of Thin Composite Plates Based on DKT Element
This paper aims to FE nonlinear analysis of thin isotropic and also symmetrical composite plates based on DKT (Discrete Kirchhoff Triangular) element. The nonlinear analysis of a plate is a more accurate and complicated case than linear analysis and has found significant application in the structural analysis, especially in air-structures, shells and plates. In many current FEM researches, finding an appropriate structural theory, element with sufficient number of nodes and degrees of freedom, per node, is of interest of scholars. In this article the geometrical nonlinear analysis of thin plates based on Kirchhoff- Love theory is considered. The DKT element, with 5 DoFs in each node, and nonlinear strains are used here. The FEM is used for analyzing and finally, Newton-Raphson method is used for solving the nonlinear problem. Results are compared with the other references (including thin and thick plate theories) and the accuracy of this work is shown in comparison with those valid results.
bending nonlinear term DKT element FEM Newton-Raphson
M.Moshfeghi Xie Yonghui M.H.Sadr
School of Energy & Power Engineering, Xian Jiaotong University,Xian,Shaanxi,710049,China School of Energy & Power Engineering, Xian Jiaotong University, Xian, Shaanxi,710049, China Department of Aerospace Engineering,Tehran Polytechnic University of Technology, Tehran, Iran
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
777-780
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）