Numerical Simulation of Strength for Composite Scarf Bonded Joint
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摘要: 复合材料斜接接头是胶接结构主要形式之一,其失效模式复杂,包括复合材料层合板和胶层的多种失效模式。提出了一种包含两种不同失效模型的分析方法,采用基于三维Hashin失效准则和指数型刚度退化准则的渐进损伤模型仿真复合材料层合板层内失效,采用内聚力模型仿真胶层失效和层合板层间失效。基于该方法建立了复合材料斜接接头强度分析三维模型,使用试验数据验证了该仿真模型,并利用该模型分析了接头的失效机理。在此基础上,研究了接头斜削角和胶层断裂韧性等设计参数对连接强度的影响,得到了上述参数对斜接接头强度影响的规律。Abstract: Scarf bonded joint is one of the main forms of composite joint, the failure modes of composite scarf bonded joint are complex, including composite laminates failure and adhesive layer failure. An computer simulation method for composite scarf joint failure analysis and strength prediction was proposed by introducing two failure models, as cohesive zone model used for simulating adhesive layer, and progressive damage model based on the three dimension Hashin failure criterion and the exponential stiffness degradation criterion for simulating the composite laminates failure. Based on the nonlinear analysis method, a finite element model for predicting adhesive failure and composite laminate failure was established. The structural analysis model was verified by the testing data, and the failure modes were analyzed by using the present model. The influences of the scarf angle and adhesive fracture toughness on the joint strength were studied, and the influence laws were obtained.
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[1] Banea M D, Da Silva L F M. Adhesively bonded joints in composite materials:an overview[J]. Proceedings of the Institution of Mechanical Engineers, Part L:Journal of Materials:Design and Applications, 2009,223(1):1-18 [2] Budhe S, Banea M D, De Barros S, et al. An updated review of adhesively bonded joints in composite materials[J]. International Journal of Adhesion and Adhesives, 2017,72:30-42 [3] Ahn S H. Repair of composite laminates[D]. California, USA:University of Stanford, 2000 [4] Ahn S H, Springer G S. Repair of composite laminates[R]. Palo Alto:Stanford Univ Ca Dept of Aeronautics and Astronautics, 2000 [5] Kwon Y W, Marrón A. Scarf joints of composite materials:testing and analysis[M]. Netherlands:Springer, 2009,16:365-378 [6] Campilho R D S G, De Moura M F S F, Domingues J J M S. Stress and failure analyses of scarf repaired DFRP laminates using a cohesive damage model[J]. Journal of Adhesion Science and Technology, 2007,21(9):855-870 [7] De Moura M F S F, Gonçalves J P M, Chousal J A G, et al. Cohesive and continuum mixed-mode damage models applied to the simulation of the mechanical behaviour of bonded joints[J]. International Journal of Adhesion and Adhesives, 2008,28(8):419-426 [8] Guan Z D, Wu A G, Wang J. Study on ASTM shear-loaded adhesive lap joints[J]. Chinese Journal of Aeronautics, 2004,17(2):79-86 [9] 姚辽军,赵美英,万小朋.基于CDM-CZM的复合材料补片补强参数分析[J].航空学报,2012,33(4):666-671 Yao L J, Zhao M Y, Wan X P. Parameter analysis of composite laminates withpatched reinforcement based on CDM-CZM[J]. Acta Aeronautica et Astronautica Sinica, 2012,33(4):666-671(in Chinese) [10] Matzenmiller A, Lubliner J, Taylor R L. A constitutive model for anisotropic damage in fiber-composites[J]. Mechanics of Materials, 1995,20(2):125-152 [11] Maimi P, Camanho P P, Mayugo J A, et al. A continuum damage model for composite laminates:Part I-constitutive model[J]. Mechanics of Materials, 2007,39(10):897-908 [12] Maimi P, Camanho P P, Mayugo J A, et al. A continuum damage model for composite laminates:Part Ⅱ-computational implementation and validation[J]. Mechanics of materials, 2007,39(10):909-919 [13] Camanho P P, Maimi P, Dávila C G. Prediction of size effects in notched laminates using continuum damage mechanics[J]. Composites Science and Technology, 2007,67(13):2715-2527 [14] Lopes C S, Seresta O, Coquet Y, et al. Low-velocity impact damage on dispersed stacking sequence laminates. Part I:Experiments[J]. Composites Science and Technology, 2009,69(7-8):926-936 [15] Lopes C S, Camanho P P, Gürdal Z, et al. Low-velocity impact damage on dispersed stacking sequence laminates. Part Ⅱ:Numerical simulations[J]. Composites Science and Technology, 2009,69(7-8):937-947 [16] Fredrickson B M. Application of spline variational analysis method in the modeling of composite repairs[D]. Ohio:Air force Institute of technology, 2006 [17] Linde P, Pleitner J, Boer H D, et al. Modelling and Simulation of Fibre Metal Laminates[C]//2004 ABAQUS Users' Conference. Boston Massachusetts:ABAQUS Inc., 2004:412-439 [18] Campilho R D S G, Banea M D, Pinto A M G, et al. Strength prediction of single-and double-lab joints by standard and extended finite element modelling[J]. International Journal of Adhesion and Adhesives, 2011,31(5):363-372 [19] Campilho R D S G, Banea M D, Neto J A B P, et al. Modelling adhesive joints with cohesive zone models:effect of the cohesive law shape of the adhesive layer[J]. International Journal of Adhesion and Adhesives, 2013,44:48-56 [20] Geubelle P H, Baylor J S. Impact-induced delamination of composites:a 2D simulation[J]. Composites Part B:Engineering, 1998,29(5):589-602 [21] Cui W C, Wisnom M R, Jones M. A comparison of failure criteria to predict delamination of unidirectional glass/epoxy specimens waisted through the thickness[J]. Composites, 1992,23(3):158-166 [22] Benzeggagh M L, Kenane M. Measurement of mixed-mode delamination fracture toughness of unidirectional glass/epoxy composites with mixed-mode bending apparatus[J]. Composites Science and Technology, 1996,56(4):439-449 [23] Kenane M, Benzeggagh M L. Mixed-mode delamination fracture toughness of unidirectional glass/epoxy composites under fatigue loading[J]. Composites Science and Technology, 1997,57(5):597-605 [24] Sokolinsky V S, Indermuehle K C, Hurtado J A. Numerical simulation of the crushing process of a corrugated composite plate[J]. Composites Part A:Applied Science and Manufacturing, 2011,42(9):1119-1126 [25] Khashaba U A, Aljinaidi A A, Hamed M A. Nanofillers modification of Epocast 50-Al/946 epoxy for bonded joints[J]. Chinese Journal of Aeronautics, 2014,27(5):1288-1300
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