复合材料层合板胶接补强结构的承载能力分析  

LOAD CAPABILITY OF COMPOSITE PLATE WITH ADHESIVE PATCH

作　　者：陈浩然[1] 曹宁源[1] 成万植[2] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,大连116024 [2]沈阳飞机设计研究所,沈阳110035

出　　处：《飞机设计》2002年第2期1-5,共5页Aircraft Design

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。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

关 键 词：复合材料 层合板 有限元方法 胶接 补强 刚度退化 承载能力 结构分析 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程]