【摘要】 在任意四边形四节点复合材料层合板壳单元的基础上 ,推导了相应的八节点胶单元 ,并采用蔡-希尔强度理论以及蔡氏刚度退化准则 ,对复合材料层合板胶接补强结构进行刚度分析和极限承载能力分析 ,编制了相应的有限元分析程序。通过算例 ,对不同的补强面积对结构挠度的影响 ,以及对复合材料层合板开孔处补强结构的破坏载荷进行了分析和讨论 ,得到了一些有益的结果。更多还原

【Abstract】 A relevant formula of eight-node adhesive finite element is deduced in the paper, which is based on a separately interpolation scheme for Reissner- Mindlin plate element A load capability analysis method for patched composite laminated structure is established by using Tsai- Hill failure criterion and Thai’s reduced stiffness scheme, and corresponding computer code is also developed From some numerical examples, the effects of patched areas upon the structure stiffness and the load capacity of composite laminates with a cutout are discussed The method and conclusions would be useful for composite structures designers更多还原