Geometric Nonlinear Analysis of General Shell Structures Subjected to Pressure Load
Finite element for geometrical non linear analysis of general shells using a three-node flat triangular shell element is presented. The flat shell element is obtained by combining the DKT plate bending element of Discrete Kirchhoff Theory and a membrane element derived from the Linear Strain Triangular (LST) element. The geometrically non-linear analysis is performed using an Updated Lagrangian Formulation. Pressure loads caused by gas, water and wind are the most important load cases in structural analysis. Often the pressure loads are approximated by constant directional loads since it is difficult to evaluate the exact value. However, the pressure load is defined as a displacement dependent one and it is necessary to consider the follower effects of the load in analysis.In this study, the large deformation analysis considering geometrical nonlinearity for shell structures under pressure loads is presented. Finite element by using a three-node flat triangular shell element is formulated and the follower effects of the pressure load are included in the formulation. Some of results are presented for pressurized cylindrical shell cantilevered beam under uniform external pressure and thin circular ring under nonuniform external pressure. The present results are in good agreement with the results available in existing literature and commercial software ABAQUS.
shell geometrically non-linear analysis follow effect pressure load
Myun-ho Jang Sam-Yeol Sur
Assistant Project Professor,Department of Architecture,Daelim College,Korea Professor,Department of Architecture,Daelim College,Korea
国际会议
北京
英文
801-803
2008-10-01（万方平台首次上网日期，不代表论文的发表时间）