为了分析层压复合材料层间特性,推导了将刚性元-弹簧元相结合的离散型界面单元的刚度矩阵.建立了层压板的准三维模型,即将Mindlin板单元应用于层压板的各子层,层间作用则利用上述界面单元来模拟.通过弯曲板元计算子层面内应力,通过界面单元的弹簧力确定层间应力.对受面内拉伸的多向层压板条进行了应力分析,与使用商业软件三维实体模型计算得到的层间和面内应力对比,结果表明准三维模型的计算结果合理.这种新型界面单元的优点是可用来表征层间损伤,并且能通过对弹簧刚度的消减来模拟分层损伤的演变.
参考文献
| [1] | Kant T,Swaminathan K.Estimation of transverse/ interlaminar stress in laminated composites:A selective review and survey of current developments[J].Composite Structure,2000,49:65-75. |
| [2] | Pipes R B,Pagno N J.Interlaminar stresses in composite laminates under uniform axial extension[J].Journal of Composite Materials,1970,4:538-548. |
| [3] | Caron J F,Ehrlacher A.Modeling the kinetics of transverse cracking in composite laminates[J].Composites Science and Technology,1997,57:1261-1270. |
| [4] | Nguyen V T,Caron J F.A new finite element for free edge effect analysis in laminated composites[J].Computers and Structures,2006,84:1538-1546. |
| [5] | 程乐锦,薛明德,胡宁.基于三维有限元法的层合圆柱壳应力分析[J].复合材料学报,2003,20(2):88-93.Cheng Lejin,Xue Mingde,Hu Ning.Stress analysis of the laminated cylindrical shells based on the 3D FEM[J].Acta Materiae Compositae Sinica,2003,20(2):88-93. |
| [6] | Ghoshal A,Kim H S,Chattopadhyay A,William H P.Effect of delamination on transient history of smart composite plates[J].Finite Elements in Analysis and Design,2005,41:850-874. |
| [7] | Shiah Y C,Chen Y H,Kuo W S.Analysis for the interlaminar stresses of thin layered composites subjected to thermal loads[J].Composites Science and Technology,2007,67:2485-2492. |
| [8] | 张彦,来新民,朱平,梁新华.复合材料铺层板低速冲击作用下损伤的有限元分析[J].上海交通大学学报,2006,40(8):1348-1353.Zhang Yan,Lai Xinmin,Zhu Ping,Liang Xinhua.The finite element analysis of low velocity impact damage in composite laminated plates[J].Journal of Shanghai Jiaotong University,2006,40(8):1348-1553 |
| [9] | 张培新,李亚智.受面内载荷的层压复合材料的层间应力分析[J].机械强度,2006,28(2),224-228.Zhang Peixin,Li Yazhi.Interlaminar stress analysis of composite laminates subjected to in-plane loading[J].Journal of Mechanical Strength,2006,28(2):224-228. |
| [10] | 何福保,沈亚鹏.板壳理论[M].西安:西安交通大学出版社,1993:190-222. |
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