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摘要: 利用高速空气炮进行了冰雹撞击复合材料T型接头的实验，研究了不同撞击速度下结构的损伤情况。同时，采用光滑质点流体动力学方法与黏聚区模型相结合的方法，对冰雹撞击复合材料T型接头进行了数值模拟。通过与实验结果的对比，验证了数值模拟模型的有效性。在此基础上，利用数值模型研究了影响复合材料T型接头冰雹撞击损伤的各种因素。计算结果表明：冰雹撞击对复合材料T型接头造成的损伤主要为分层损伤；冰雹的撞击速度、尺寸、入射角等，都对T型接头的损伤程度有很大影响；T型接头的分层面积与冰雹的撞击能量之间呈近似线性关系，分层面积随着撞击能量的增大而增大；冰雹的入射角越大，分层面积与撞击力峰值也越大。Abstract: This paper was dedicated to developing a numerical model which could predict the delamination of composite T-joint structures caused by high velocity impact of hailstone. Experiments of hailstone impact and subsequent numerical analyses were performed to study the performance of composite T-joints under hailstone impact. The smooth particle hydrodynamic (SPH) approach and the cohesive zone model (CZM) were both employed in numerical simulations to predict the delamination of composite T-joints, and the numerical results show good agreement with that of experiments such as delamination size and displacement of the composite T-joints. In addition, based on the numerical simulation, the influence of calculation parameters on the damages of the T-joints were investigated, and the results show that the velocity, the dimension and the impact angle of hailstone had great influence on the damage of the composite T-joint structures. The numerical simulation show an approximately linear relationship between the impact energy and the delamination size. The peak force of impact and the delamination size increase with the increase of the impact angle.
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Key words:
- solid mechanics /
- delamination damage /
- cohesive zone model /
- composite T-joint /
- hailstone /
- high velocity impact
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图 9 试验件筋条顶点处z方向位移曲线
Figure 9. Displacement in z direction at the top of fillet of the specimen
图 10 冰雹接头在x方向的分层长度与撞击能量关系
Figure 10. Delamination length in x direction versus impact energy
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[1] Singh S, Masiulaniec K C, DeWit K J, et al. Measurements of the impact forces of shed ice striking a surface[C]//Proceedings of the 32nd Aerospace Sciences Meeting and Exhibit. 1994. [2] Lavoie M, Ensan M N, Gakwayal A. Development of an efficient numerical model for hail impact simulation based on experimental data obtained from pressure sensitive film[J]. Mechanics Research Communications, 2011, 38(1): 72-76. doi: 10.1016/j.mechrescom.2010.07.014 [3] Kim H, Welch D A, Kedward K T. Experimental investigation of high velocity ice impacts on woven carbon/epoxy composite panels[J]. Composites Part A: Applied Science and Manufacturing, 2003, 34(1): 25-41. doi: 10.1016/S1359-835X(02)00258-0 [4] Kim H, Kedward K T. Modeling hail ice impacts and predicting impact damage initiation in composite structures[J]. AIAA Journal, 2000, 38(7): 1278-1288. doi: 10.2514/2.1099 [5] Anghileri M, Castelletti L M L, Invernizzi F, et al. A survey of numerical models for hail impact analysis using explicit finite element codes[J]. International Journal of Impact Engineering, 2005, 31(8): 929-944. doi: 10.1016/j.ijimpeng.2004.06.009 [6] Cartié D D R, Dell'Anno G, Partridge E P. 3D reinforcement of stiffener-to-skin T-joints by Z-pinning and tufting[J]. Engineering Fracture Mechanics, 2006, 73(16): 2532-2540. doi: 10.1016/j.engfracmech.2006.06.012 [7] 崔浩, 李玉龙, 刘元镛.基于粘聚区模型的含填充区复合材料接头失效数值模拟[J].复合材料学报, 2010, 27(2): 161-168.Cui Hao, Li Yu-long, Liu Yuan-yong. Numerical simulation of composites joints failure based on cohesive zone model[J]. Acta Materiae Compositae Sinica, 2010, 27(2): 161-168. [8] 汪洋.高速冰雹撞击碳纤维增强复合材料层合板研究[D].西安: 西北工业大学航空学院, 2012. [9] Fan C, Jar P Y B, Cheng J J. Cohesive zone with continuum damage properties for simulation of delamination development in fibre composites and failure of adhesive joints[J]. Engineering Fracture Mechanics, 2008, 75(13): 3866-3880. doi: 10.1016/j.engfracmech.2008.02.010 期刊类型引用(7)
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