上海交通大学学报

上海交通大学学报 >

2023 , Vol. 57 >Issue 2: 230 - 240

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2021.344

材料科学与工程

碳纤维复合材料/钢的胶铆连接失效机理和选材方法

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  • 同济大学 汽车学院,上海 201804
余海燕(1976-),教授,博士生导师,现主要从事汽车轻量化的研究; E-mail:yuhaiyan@tongji.edu.cn.

收稿日期: 2021-09-10

  修回日期: 2021-10-29

  录用日期: 2021-11-17

  网络出版日期: 2023-03-01

基金资助

上海市汽车工业科技发展基金项目(1749)

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Failure Mechanism and Material Selection Method of CFRP/Steel Rivet-Bonding Joints

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  • School of Automotive Studies, Tongji University, Shanghai 201804, China

Received date: 2021-09-10

  Revised date: 2021-10-29

  Accepted date: 2021-11-17

  Online published: 2023-03-01

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摘要

为了揭示碳纤维复合材料(CFRP)与钢板连接设计中,母材厚度和强度对接头失效的影响规律,对CFRP层合板与DC05、HC260Y、DP590、DP780、DP1180、PHS1500钢板组成的胶接、铆接和胶铆混合接头进行单向和正向拉伸试验,分析各接头连接强度和失效模式,提出CFRP/钢接头母材厚度比和强度比的推荐范围.结果表明:CFRP/钢接头失效模式由较弱一侧母材强度和刚度决定,在连接设计中,应尽可能使两母材的强度和刚度相近;CFRP零件与相邻钢件厚度比的推荐范围为1.37~1.91,母材极限承载比的推荐范围为0.9~1.52.

关键词： 碳纤维复合材料层合板/钢板; 连接强度; 失效机理; 选材

本文引用格式

余海燕, 吴航宇 . 碳纤维复合材料/钢的胶铆连接失效机理和选材方法[J]. 上海交通大学学报, 2023 , 57(2) : 230 -240 . DOI: 10.16183/j.cnki.jsjtu.2021.344

Abstract

To reveal the influence of material selection on joint properties in the joint design between carbon fiber reinforced polymer (CFRP) and steels, experiments of uniaxial tension and normal tension were performed on the bonded, riveted, and rivet-bonding joints, which were made of CFRP laminates and DC05, HC260Y, DP590, DP780, DP1180, and PHS1500 steel sheets. The failure modes and tensile strength of these joints were analyzed. The thickness ratio and bearing coefficient ratio of the CFRP parts and adjacent steel parts were summarized. The results show that the failure mode of the CFRP/steel joint depends on the mechanical properties of the material of the weaker side. During joint design, the strength and stiffness of the CFRP parts and adjacent parts should be as similar as possible. The thickness ratio of the CFRP parts and adjacent steel parts is recommended to be between 1.37 and 1.91, and the load bearing coefficient ratio is recommended to be between 0.9 and 1.52.

Key words： carbon fiber reinforced plymer (CFRP) laminate/steel; joining strength; failure mechanism; material selection

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