A New Interface Element for Shell Structures Delamination Analysis
A combined interface element consists of eight rigid beams and a zero thickness cohesive element is presented.The type of elements are used in conjunction with shell elements to constitute the three dimensional model.In the FE model,intralaminar damage takes place within the shell elements and interlaminar damage is restricted to occur at the interface elements.The eight-node interface elements are of finite thickness,with each node possessing six DOFs.No additional DOFs are required in the FE model except those of shell elements.The translational and rotational movements of the shell nodes contribute to the deformation of the interface elements.The interfacial damage accumulation and final delamination are characterized by progressive stiffness degradation of the internal cohesive element.The crack growth in double cantilever beam (DCB) was simulated with the proposed elements and corresponding finite element model.The simulation results agree well with the experimental ones and analytical solutions.
composite laminate cohesive zone model interface element delamination
Biao Li Yazhi Li Jie Su
School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China
国际会议
北京
英文
1-6
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）