建立了碳纤维复合材料T型接头数值模型,模拟了其在拉伸载荷下的损伤产生、扩展及失效过程,并对碳纤维复合材料T型接头试件进行了静态拉伸试验.结果表明,接头的初始损伤载荷为9.8～12.0 kN,损伤发生后接头的载荷值发生突降(降低约27％～38％),此时接头仍具有一定承载能力;试件完全脱胶载荷较初始损伤载荷略有降低(载荷范围为8.0～8.6 kN).数值计算和试验结果吻合,结果均显示填料区是碳纤维复合材料T型接头最薄弱的部位,易发生破坏;填料区破坏后裂纹迅速向填料区周围的胶层扩展,导致胶层的剥离,这是导致碳纤维复合材料T型接头失效的最主要原因.
参考文献
| [1] | 杜善义.先进复合材料与航空航天[J].复合材料学报,2007,24(1):1-12.Du Shanyi.Advanced composite materials and aerospace engineering[J].Acta Materiae Compositae Sinica,2007,24(1):1-12. |
| [2] | Engelstad S P,Mollenhauer D H.Comparisons of measured moire fringe surface strain and model predictions for a cobonded pi-preform composite tee joint[J].Proceeding of 45th AIAA Confer Californis,2004:19-22. |
| [3] | Engelstad S P,Averill R C,Berry O T.Implementation and application of zig-zag finite elements for composite bonded teejoint modeling[C]//42th AIAA Confer and Exhibit Seattle.US:AIAA,2001. |
| [4] | Apalak M K,Gunes R,Turaman M O.Thermal and geometrically non-linear stress analyses of an adhesively bonded composite tee joint[J].Composites:Part A,2003,34:135-150. |
| [5] | Shenoi R A,Read P J C L,Hawkins G L.Fatigue failure mechanisms in fibre-reinforced plastic laminated tee joints[J].IntJ Fatigue,1995,17(6):415-426. |
| [6] | Marcadon V,Nadota Y,Roy A.Fatigue behavior of T-joints for marine applications[J].International Journal of Adhesion & Adhesives,2006,26:481-489. |
| [7] | 李亚智,张向.整体加筋壁板的破损安全特性与断裂控制分析[J].航空学报,2006,27(5):842-846.Li Yazhi,Zhang Xiang.An analysis of fail and safety and fracture control of integrally stiffened panels[J].Acta Aeronuatica et Astronatica Sinica,2006,27(5):842-846. |
| [8] | 程家林.层压复合材料连接接头设计及其在大飞机中的应用[J].航空学报,2008,29(3):640-644.Cheng Jialin.Design of composite laminated joint and its application in large aircrafts[J].Acta Aeronuatica et Astronatica Sinica,2008,29(3):640-644. |
| [9] | 朱亮,崔浩,李玉龙,等.含缺陷复合材料T型接头失效数值分析[J].航空学报,2012,2(33):287-296.Zhu Liang,Cui Hao,Li Yulong,et al,Numerical simulation of the failure of composite T-joints with defects[J].Acta Aeronautica et Astronautica Sinica,2012,2(33):287-296. |
| [10] | 赵丽滨,彭雷,张建宇,等.复合材料π接头拉伸力学性能的实验和计算研究[J].复合材料学报,2009,26(2):181-186.Zhao Libin,Peng Lei,Zhang Jianyu,et al.Experimental and numerical research on mechanics performance of composite π joint under tensile loading[J].Acta Materiae Compositae Sinica,2009,26(2):181-186. |
| [11] | 崔浩,李玉龙,刘元镛,等.基于粘聚区模型的含填充区复合材料失效数值模拟[J].复合材料学报,2010,27(2):161-168.Cui Hao,Li Yulong,Liu Yuanyong,et al.Numerical simulation of composite joints failure ased on cohesive zone mode[J].Acta Materiae Compositae Sinica,2010,27 (2):161-168. |
| [12] | Blakea J I R,Shenoia R A,House J.Progressive damage analysis of tee joints with viscoelastic inserts[J].Composites:Part A,2001,32:641-653. |
| [13] | Dharmawan F,Thomson R S,Li H.Geometry and damage effects in a composite marine T-joint[J].Composite Structures,2004,66:181-187. |
| [14] | Wagner W,Balzani C.Simulation of delamination in stringer stiffened fiber-reinforced composite shells[J].Computers and Structures,2008,86(9):930-939. |
| [15] | Giulio A.On the influence of the shape of the interface law on the application of cohesive-zone models[J].Composites Science and Technology,2006,66(6):723-730. |
| [16] | 赵渠森.QY8911双马来酰亚胺树脂韧性评定[J].航空学报,1991,112(12):583-588.Zhao Qusen.Evaluation of the toughness of QY8911 Bismaleimde[J].Acta Aeronautica et Astronautica Sinica,1991,112(12):583-588. |
| [17] | 中国国家标准化管理委员会.GB/T 1040.4-2006/ISO 529-4:1997各向同性和正交各向异性纤维增强复合材料的实验条件[S].北京:中国标准出版社,2006.The China National Standardization Management Committee.GB/T 1040.4-2006/ISO 529-4:1997 Test conditions for isotropic and orthotropic fiber-reinforced plastic composites[S].Beijing:Standards Press of China,2006. |
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