ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Bearing Strength of Composite Joints Interference-fitted with Blind Bolts
Received date: 2012-09-07
Revised date: 2012-11-28
Online published: 2012-12-05
Since the join technology is the key link of the structural design of composite connection, an investigation is conducted to study the effect of interference fit on the bearing strength of composite single-bolt double-lap joints, and a three-dimensional finite element model is developed to predict the bearing strength of composite bolted joints with different sizes of interference fit, taking into account the bolt-hole connection, progressive damage, and large deformation theory. To predict progressive ply failure, Hashin failure criteria and Tan degradation rules are employed. This model considers the effects of different interference sizes (0%, 0.5%, 3%) on the bearing strength and stiffness of composite joints. Results show that appropriate sizes of interference can improve the bearing strength of joints. However, the joints of 3% excessive interference fit have lower bearing strength and higher bearing stiffness. Good agreement between experimental results and numerical predictions is observed.
Key words: composites; blind bolt; interference fit; fastened joint; progressive damage
WEI Jingchao , JIAO Guiqiong , YAN Zhaoming , LIU Fenglei . Bearing Strength of Composite Joints Interference-fitted with Blind Bolts[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(7) : 1627 -1635 . DOI: 10.7527/S1000-6893.2013.0280
[1] Conti P. Influence of geometric parameters on the stress distribution around a pin-loaded hole in a composite laminate. Composite Science and Technology, 1986, 25(2): 1-19.
[2] Naik R A, Crews J H. Stress analysis method for a clearance-fit bolt under bearing conditions. AIAA Journal, 1985, 24(3): 1348-1353.
[3] Chen W H, Lee S, Yeh J T. Three-dimensional contact stress analysis of a composite laminate with bolted joint. Composite Structures, 1995, 30(3): 287-297.
[4] Sun H T, Qing X, Chang F K. The response of composite joints with bolt-clamping loads, Part Ⅱ: model verification. Composite Material, 2002; 36(1): 69-91.
[5] McCarthy M A, Lawlor V P, Stanley W F, et al. Bolt-hole clearance effects and strength criteria in single bolt, single lap, composite joints. Composite Science and Technology, 2002, 62(10-11): 1415-1431.
[6] Xiao Y, Ishikawa T. Bearing strength and failure behavior of bolted composite joints, Part I: experimental investigation. Composites Science and Technology, 2005, 65(7-8): 1022-1031.
[7] Liu P, Zhang K D. An experimental study on fatigue life of interference-fit composite joint. Acta Aeronautica et Astronautica Sinica, 1991, 12(12): 546-549. (in Chinese) 刘萍, 张开达. 干涉对复合材料叠层板螺栓连接疲劳强度的影响. 航空学报, 1991, 12(12): 546-549.
[8] Zhang B P, Zhang K D. Fatigue of interference-fit mechanical joint in T300/QY8911 laminate. Acta Materiae Compositea Sinica, 1996, 13(1): 97-100. (in Chinese) 张博平, 张开达. T300/QY8911 π/4层压板机械连接干涉疲劳. 复合材料学报, 1996, 13(1): 97-100.
[9] Chinese Aeronautical Establishment. Composite structures design manual. Beijing: Aviation Industry Press, 2001: 145-175. (in Chinese) 中国航空研究院. 复合材料结构设计手册. 北京:航空工业出版社,2001: 145-175.
[10] Department of Defense. MIL-HDBK-17F Composite materials handbook: Volume 3, polymer matrix composite materials usage, design, and analysis. Philadelphia: Government Publication, 2002: 271-280.
[11] Thoppul S D, Finegan J, Gibson R F. Mechanics of mechanically fastened joints in polymer-matrix composite structures—a review. Composites Science and Technology, 2009, 69(3-4): 301-329.
[12] Hashin Z. Failure criteria for unidirectional fiber composites. Journal of Applied Mechanics, 1980, 47(2): 329-335.
[13] Xiao Y, Ishikawa T. Bearing strength and failure behavior of bolted composite joints, Part Ⅱ: modeling and simulation. Composites Science and Technology, 2005, 65(7-8): 1032-1043.
[14] Chang F K, Chang K Y. A progressive damage model for laminated composites containing stress concentrations. Journal of Composite Material, 1987, 21(9): 834-855.
[15] Tan S C, Perez J. Progressive failure of laminated composites with a hole under compressive loading. Journal of Reinforced Plastic Composite, 1993, 18(10): 255-278.
[16] Irisarri F X, Laurin F, Carrere N, et al. Progressive damage and failure of mechanically fastened joints in CFRP laminates, Part I: refined finite element modeling of single-fastener joints. Composite Structures, 2012, 94(8): 2269-2277.
[17] ASTM D5961/D5961 M-05 Standard test method for bearing response of polymer matrix composite laminates. Philadelphia: American Society for Testing and Materials, 2005.
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