【作者】 张志峰； 陈浩然； 白瑞祥；

【Author】 Zhang Zhifeng,Chen Haoran,Bai Ruixiang (State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology,Dalian 116023)

【机构】 大连理工大学工业装备结构分析国家重点实验室；

【摘要】 基于精细三角形Mindlin板单元构造了三角形复合材料加筋平面壳单元。肋骨和蒙皮的采用了相同位移插值形函数,保证两者变形协调性同时,又放松了肋骨转动的约束。肋骨放置的数量、位置和角度可以任意,为结构的单元网格剖分带来了很大的便利。通过算例验证了本文单元的有效性,并分析了内外加筋形式对等格栅加筋柱壳稳定性的影响。更多还原

【Abstract】 In accordance with the refined triangular Mindlin plate elements developed by Chen,a new triangular composite stiffened flat shell element has been proposed.Displacement compatibility between the stiffeners and plate is well maintained by using the same shape functions for both elements,and additional degrees of rotations of the stiffeners are introduced.In addition,the number and orientation of the stiffeners in the element can be defined by users,thus the meshing procedure is rather convenient.The numerical results indicate its effectiveness,especially,for analyzing the case of the plate stiffened by thick beams.The effects of stiffened style such as innerstiffened and outer-stiffened shell upon the buckling loads of composite isogrid cylindrical shell (AGS) are also carried out.更多还原