STUDY ON PERFORMANCE OF COMPOSITE-METAL MECHANICAL JOINTS

Abstract

Abstract: An experiment investigation has been carried out with different kinds of specimens to investigate the failure mode and the damage load. The ultrasonic evaluations were used to show the situation of bearing damage near the hole. A numerical model by ABAQUS was established in order to point out the influence of different bolt types (protruding and countersunk joints), with or without gasket and joint types on composite joints. The study shows that the protruding joints are able to sustain 30% more load than the countersunk ones and the joints with gasket have higher load-carrying capability. The double-bolt joints can double the load-carrying capability as compared to the single-bolt joints.

Key words: composite, metal, mechanical joints, bearing damage, finite element analysis

CLC Number:

TB332

JIA Yun-chao, GUAN Zhi-dong, SONG Xiao-jun. STUDY ON PERFORMANCE OF COMPOSITE-METAL MECHANICAL JOINTS[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(4): 66-70.

References

[1] 杜善义,关志东.我国大型客机先进复合材料应对策略思考[J].复合材料学报, 2008,25(1):1-10.
[2] AktasAlaattin, Dirikolu M. Husnu. The effect of stacking sequence of carbon epoxy composite laminates on pinned-joint strength[J]. Composite Structures, 2003, 62: 107-111.
[3] AktasAlaattin. Bearing strength of carbon epoxy laminates under static and dynamic loading[J]. Composite Structures, 2005,67: 485-489.
[4] Aktas A, Karakuzu R. Failure analysis of two-dimensional carbon epoxy composite plate pinned joint[J]. Mech Compos Mater Struct, 1999, 6:347-361.
[5] E.Madenci, S.Shkarayev, B.Sergeev Analysis of composite laminates with multiple fasteners[J]. Int. J. Solids Structures, 1998,35(15):1793-1811.
[6] Ekh Johan, SchonJoakim. Finite element modeling and optimization of load transfer in multi-fastener joints using structural elements[J]. Composite Structures, 2008, 82:245-256.
[7] Ekh J, Schon J. Load transfer in multi row, single shear, composite-to-aluminium lap joints[J]. Compos SciTechnol, 2006, 66:875-885.
[8] A.RICCIO, L.MARCIANO. Effects of geometrical and material features on damage onset and propagation in single-lap bolted composite joints under tensile load: Part I-Experimental Studies[J]. Journal of Composite Materials,2005,39:2071-2090.
[9] A.RICCIO. Effects of geometrical and material features on damage onset and propagation in single-lap bolted composite joints under tensile load: Part II-Numerical Studies[J]. Journal of Composite Materials, 2005,39:2091-2112.
[10] Shokrich M M, Lessard L B. Progressive fatigue damage modeling of composite materials, part I: modeling[J]. Journal of Composite Materials, 2000, 34:1056-1080.
[11] Shokrich M M, Lessard L B. Progressive fatigue damage modeling of composite materials, part II: material characterization and model verification[J]. Journal of Composite Materials,2000,34:1081-1116.
[12] Wang Hongsheng, Hung Changli, Chang Fukuo. Bearing Failure of Bolted Composite Joints.PartⅠ: Experimental Characterization[J]. Journal of Composite Materials, 1996, 30(12): 1284-1313.
[13] Hung Changli, Chang Fukuo. Bearing Failure of Bolted Composite Joints.PartⅡ:Model and Verification[J]. Journal of Composite Materials, 1996, 30(12): 1359-1400.
[14] 刘兴科,李亚智,刘向东,等. 金属和复合材料多钉连接载荷分配研究[J]. 航空工程进展, 2011, 2(2): 193-198.
[15] 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.
[16] 张震,吕志国,文潘涛,等. 多钉连接复合材料板钉传载荷的估算[J]. 科学技术与工程, 2007, 7(10): 2197-2200.