Low-velocity Impact Damage Analysis of Composite Laminates Using Self-adapting Delamination Element Method  

基于自适应分层元的复合材料层合板低速冲击损伤分析(英文)

作　　者：王立朋[1] 燕瑛[1] 吴大方[1] 吴浩[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《Chinese Journal of Aeronautics》2008年第4期313-319,共7页中国航空学报（英文版）

基　　金：National Natural Science Foundation of China (50073002)

摘　　要：On the basis ofa 2D 4-node Mindlin shell element method, a novel self-adapting delamination finite element method is presented, which is developed to model the delamination damage of composite laminates. In the method, the sublaminate elements are generated automatically when the delamination damage occurs or extends. Thus, the complex process and state of delamination damage can be simulated practically with high efficiency for both analysis and modeling. Based on the self-adapting delamination method, linear dynamic finite element damage analysis is performed to simulate the low-velocity impact damage process of three types of mixed woven composite laminates. Taking the frictional force among sublaminations during delaminating and the transverse normal stress into account, the analytical results are consistent with those of the experimental data.On the basis ofa 2D 4-node Mindlin shell element method, a novel self-adapting delamination finite element method is presented, which is developed to model the delamination damage of composite laminates. In the method, the sublaminate elements are generated automatically when the delamination damage occurs or extends. Thus, the complex process and state of delamination damage can be simulated practically with high efficiency for both analysis and modeling. Based on the self-adapting delamination method, linear dynamic finite element damage analysis is performed to simulate the low-velocity impact damage process of three types of mixed woven composite laminates. Taking the frictional force among sublaminations during delaminating and the transverse normal stress into account, the analytical results are consistent with those of the experimental data.

关 键 词：self-adapting delamination element method low-velocity impact DELAMINATION composite laminate 

分 类 号：V250.2[一般工业技术—材料科学与工程]