ADHESIVE THICKNESS AND THE CARRYING CAPABILITY OF ADHESIVE DOUBLE-LAP COMPOSITE JOINT

doi:10.19936/j.cnki.2096-8000.20210328.010

Abstract

Abstract: The calculation formula of carrying capabilty of adhesive double-lap composite joint had limitation, which was only applicable in certain adhesive thickness range and needed to be improved. In order to improve the formula, the shear stress and peel stress of adhesive layer along the overlap length were contrastively analyzed under experimental carrying capability and theoretical calculation load for analytical analysis. It is pointed out that the shear stress and peel stress decrease along with the adhesive thickness increases, so it does not affect the carrying capability. Also, it is not entirely appropriate to attribute the carrying capability reduction to defects. In addition, the deduction was put forwards that the change of shear property caused by the change of adhesive thickness is the main reason for the carrying capability reduction.

Key words: composite adhesive joints, adhesive thickness, shear stress, peel stress, carrying capability

CLC Number:

TB332

MA Yu, LI Yong-liang. ADHESIVE THICKNESS AND THE CARRYING CAPABILITY OF ADHESIVE DOUBLE-LAP COMPOSITE JOINT[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(3): 66-70.

References

[1] 谢鸣九. 复合材料连接技术[M]. 上海: 上海交通大学出版社, 2016.
[2] 谢鸣九. 复合材料连接[M]. 上海: 上海交通大学出版社, 2011.
[3] 薛克光, 周瑾. 复合材料结构连接件设计与强度[M]. 北京: 航空工业出版社, 1988.
[4] BANEA M D, DA SILVA L F M. Adhesively bonded joints in composite materials: An overview[C]//Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials Design and Applications. 2009. DOI: 10.1243/14644207 JMDA219. http://pil.sagepub.com/content/223/1/1.
[5] 邵金涛. 复合材料胶接结构应力分析与渐进损伤过程的研究[D]. 南京: 南京航空航天大学, 2019.
[6] HART-SMITH L J. Adhesive-bonded double-lap joints: Technical report NASA CR-112235[R]. Virginia: National Aeronautics and Space Administration, 1973.
[7] 马毓. 纤维增强树脂基拉挤复合材料构件连接技术研究[D]. 南京: 解放军理工大学, 2011.
[8] 游敏, 郑小玲. 胶接强度分析及应用[M]. 武汉: 华中科技大学出版社, 2009.
[9] 余小青. 复合材料双面搭接接头力学性能研究[D]. 南京: 南京航空航天大学, 2010.
[10] 刘遂, 关志东, 郭霞, 等. 复合材料双搭接接头拉伸强度研究[J]. 航空材料学报, 2012, 32(5): 86-91.
[11] 刘坤良. 复合材料连接结构强度研究与失效分析[D]. 郑州: 郑州大学, 2014.
[12] 刘亚文, 宋建国, 马毓, 等. 胶层厚度对双搭接胶连接接头承载力的影响分析[J]. 玻璃钢/复合材料, 2012(2): 50-54.
[13] 袁辉, 刘鹏飞, 王景全, 等. 胶层厚度对胶连接接头承载力的影响机理与控制[J]. 解放军理工大学学报(自然科学版), 2013, 14(1): 58-62.
[14] RODRIGUEZ R Q, PAIVA W P D, SOLLERO P, et al. Failure criteria for adhesively bonded joints[J]. International Journal of Adhesion & Adhesives, 2012(37): 26-36.
[15] BUDHE S, BANEA M D, BARROS S D, et al. An updated review of adhesively bonded joints in composite materials[J]. International Journal of Adhesion & Adhesives, 2017(72): 30-42.
[16] TSAI M Y, MORTON J. An investigation into the stresses in double-lap adhesive joints with laminated composite adherends[J]. International Journal of Solids and Structures, 2010(47): 3317-3325.
[17] 邱平. 碳纤维增强复合材料含缺陷胶接接头的强度与失效分析[D]. 杭州: 浙江大学, 2018.