摘要
采用带旋转自由度参数C0 类板 (壳 )单元 ,研究复合材料箱型结构的初始屈曲性态 .在推导单元几何刚度阵时 ,同时考虑出平面位移和面内位移对膜应变的影响 ;着重讨论了不同材料正方形截面梁的长细比与欧拉临界力的关系 ,复合材料典型盒段的截面形式和铺设角、铺设次序对初始屈曲性态的影响 .
Buckling behaviour of composite box-like structures is researched by using the arbitrary quaduangular plate (shell) element possessing rotation degree of freedom. The influence of in-plane and out-plane displacement on the membrane strain should be considered to form the geometrical stiffness of element. Computional investigations of buckling behaviour of beams and box-like structures employing the finite element method are presented, and the influence of L/b, laminate ply angle, order and section-form on buckling behaviour is discussed.
出处
《固体力学学报》
CAS
CSCD
北大核心
2003年第1期83-88,共6页
Chinese Journal of Solid Mechanics
基金
航空基金 (0 0B0 10 0 1)资助
