摘要
本文采用有限元法预计蜂窝夹层结构的分层破坏载荷,考虑到屈曲同时引起结构分层,假定认为屈曲临界载荷即为分层破坏载荷。在有限元模型中,为了进行有效的压扁区预先分层处理,采用双节点法模拟层压板分层现象。有限元计算结果与试验数据基本吻合,从而验证了计算方法是可行的、可靠的,也进一步论证了前提假定的正确性。
The delaminating breaking load of the honeycomb sandwich structure is estimated by using the finite element analysis method in the paper,considering buckling inducing structural delaminating,the method assumed buckling critical load is delaminat- ing breaking load.In order to achieve effective delaminating pretreatment in the flatten area in the finite dement model,the double- node method is used to simulate laminate delaminating phenomena.The calculation result of the finite element analysis method is consistent with test data,and the feasible and reliable of the calculation method is verified,furthermore,the validity of the assump- tion is demonstrated.
出处
《直升机技术》
2004年第2期15-18,共4页
Helicopter Technique
关键词
有限元
蜂窝夹层结构
分层
屈曲
双节点
finite element
honeycomb sandwich structure
delaminating
buckling
double-node
