CFRP与铝板胶螺混合连接结构拉伸性能研究

复合材料科学与工程 ›› 2020, Vol. 0 ›› Issue (8): 12-17.

CFRP与铝板胶螺混合连接结构拉伸性能研究

张超禹, 郑艳萍^*, 熊勇坚, 王旭

郑州大学机械与动力工程学院,郑州450001

收稿日期:2019-12-03 出版日期:2020-08-28 发布日期:2020-08-28
通讯作者: 郑艳萍(1975-),女,副教授,硕士生导师,主要研究方向为复合材料结构强度及损伤检测,ypzheng@126.com。
作者简介:张超禹(1996-),男,硕士研究生,主要研究方向为复合材料结构连接。
基金资助:
国家自然科学基金(U1833116);河南省高校重点科研项目(20A460023)

TENSILE PROPERTIES ANALYSIS OF CFRP-ALUMINUM BONDED-BOLTED HYBRID JOINT

ZHANG Chao-yu, ZHENG Yan-ping^*, XIONG Yong-jian, WANG Xu

School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China

Received:2019-12-03 Online:2020-08-28 Published:2020-08-28

摘要/Abstract

摘要： 基于三维渐进损伤理论,建立了复合材料层合板-铝板双搭接胶接连接、螺栓连接、胶螺混合连接结构拉伸强度预测模型,数值仿真结果与试验高度吻合,验证了所建模型的可行性。在此基础上,探究了搭接宽度、搭接长度、胶层厚度、接触面摩擦系数和螺栓个数等参数对胶螺混合连接结构拉伸性能的影响。结果表明:随着搭接宽度和搭接长度的增加,接头失效载荷先逐渐增加后趋于稳定,最优搭接宽度和搭接长度为30 mm和35 mm;胶层厚度对混合连接结构的拉伸失效载荷基本没有影响;胶螺混合连接结构中螺栓接头和层合板之间、螺栓与孔之间的摩擦系数越大,连接结构的拉伸失效载荷越大;在搭接区域相同的情况下,双钉混合连接结构的拉伸失效载荷比单钉的拉伸失效载荷提高了69%。

关键词: 胶螺混合, 螺栓, 搭接长度, 失效载荷, 复合材料

Abstract: Based on the three-dimensional progressive damage theory, the tensile strength prediction model of composite laminate-aluminum bonded joint, bolted joint and bonded-bolted hybrid double-lap joints structure were established. The numerical simulation results were in good agreement with the experimental height, which validate the feasibility of the model. On this basis, the influences of parameters such as lap width, lap length, thickness of the adhesive layer, friction coefficient of contact surface and number of bolts on the tensile properties of the bonded-bolted hybrid joint structure were investigated. The results show that with the increase of the lap width and the lap length, the failure load of the joint increases gradually and then stabilizes. The optimum lap width and lap length are 30 mm and 35 mm. The thickness of the adhesive layer has no effect on the tensile failure load of the hybrid joint structure. The greater the coefficient of friction between the bolt joint and the laminate and the bolt and the hole in the rubber-spiral hybrid joint structure, the greater the tensile failure load of the joint structure. In the case where the overlap region is the same, the double-nail hybrid joint structure has a tensile failure load that is 69% higher than that of a single nail.

Key words: bonded-bolted hybrid, bolt, lap length, failure load, composites

中图分类号:

TB332

张超禹, 郑艳萍, 熊勇坚, 王旭. CFRP与铝板胶螺混合连接结构拉伸性能研究[J]. 复合材料科学与工程, 2020, 0(8): 12-17.

ZHANG Chao-yu, ZHENG Yan-ping, XIONG Yong-jian, WANG Xu. TENSILE PROPERTIES ANALYSIS OF CFRP-ALUMINUM BONDED-BOLTED HYBRID JOINT[J]. Composites Science and Engineering, 2020, 0(8): 12-17.

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