建立了分析复合材料层合板多钉连接结构的三维有限元模型,考虑了接触状态非线性和累积损伤过程非线性的影响,运用ANSYS中的APDL编制程序实现了对复合材料层合板机械连接结构整个承载过程的可视化仿真模拟,同时进行了T300/QY9512复合材料层合板多钉单剪拉伸试验.结果表明,在一定几何尺寸下,复合材料层合板多钉连接结构钉载分配的不均匀性在整个承载过程中并无明显改善.根据本文中提出的累积损伤模型对各孔位变形进行了计算,计算结果与试验结果吻合较好.从累积损伤过程的仿真结果可以明显看出,不同几何尺寸的多钉连接结构中各钉孔附近损伤的起始和发展过程具有明显的区别.优化设计结果表明,不同钉孔处层合板厚度的改变对各钉钉载分配无明显影响,但孔边法向和切向应力大小和分布均受到严重影响,对整个多钉连接结构的损伤程度产生很大变化.
参考文献
| [1] | Camanho P P,Matthews F L.A progressive damage model for mechanically fastened joints in composites laminates[J].Journal of Composite Materials,1999,33:2248-2280. |
| [2] | Tserpes K I,Labeas G,Papanikos P,et al.Strength prediction of bolted joints in graphite/epoxy composite laminates[J].Composites Part B:Engineering,2002,33:521-529. |
| [3] | McCarthy M A,Lawlor V P,Stanley W F,et al.Bolt-hole clearance effects and strength criteria in single-bolt,singlelap,composite bolted joints[J].Composites Science and Technology,2002,62:1415-1431. |
| [4] | 关文长,陈浩然,郑长良.复合材料和结构机械连接件破坏历程的数值模拟与试验验证[J].航空学报,1995,16(2):143-147.Guan Wenchang,Chen Haoran,Zheng Changliang.Numerical simulation and experimental verification of failure process and load-carrying capacity for mechanically fastened joints in composite materials and structures[J].Acta Aeronautica et Astronautica Sinica,1995,16(2):143-147. |
| [5] | 杨旭,章怡宁,许希武.复合材料层板多钉机械连接强度计算方法[J].航空学报,1998,19(1):24-29.Yang Xu,Zhang Yining,Xu Xiwu.Strength analysis method of composite plate with multiple bolted joint[J].Acta Aeronautica et Astronautica Sinica,1998,19(1):24-29. |
| [6] | 迟坚,谢鸣九.复合材料多排钉机械连接有限元分析方法研究[J].航空学报,1998,19(4):499-502.Chi Jian,Xie Mingjiu.Research on multiple-bolted composite joint by finite element analysis[J].Acta Aeronautica et Astronautica Sinica,1998,19(4):499-502. |
| [7] | 崔海涛,温卫东.复合材料层合板单排多钉双剪联接接送强度分析[J].航空动力学报,2002,17(5):623-628.Cui Haitao,Wen Weidong.Strength analysis for multiple double-lapped joints in CFRP laminates[J].Journal of Aerospace Power,2002,17(5):623-628. |
| [8] | 王丹勇,温卫东,崔海涛.复合材料单钉接头三维逐渐损伤破坏分析[J].复合材料学报,2005,22(3):168-174.Wang Danyong,Wen Weidong,Cui Haitao.Three-dimensional progressive damage analysis of single fastener joints in composite laminates[J].Acta Materiae Compositae Sinica,2005,22(3):168-174. |
| [9] | 王栋.复合材料机械连接结构仿真设计方法研究[D].北京:北京航空航天大学,2005.Wang Dong.On visual simulation of progressive damage for composite mechanically fastened joints[D].Beijing:Beijing University of Aeronautics and Astronautics,2005. |
| [10] | Kradinov V,Madenci E,Ambur D R.Bolted lap joints of laminates with varying thickness and metallic inserts[J],Composite Structures,2005,68:75-85. |
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