碳纤维复合材料与铝合金胶铆混合连接力学性能可靠性研究

doi:10.3901/JME.2023.24.334

机械工程学报 ›› 2023, Vol. 59 ›› Issue (24): 334-343.doi: 10.3901/JME.2023.24.334

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碳纤维复合材料与铝合金胶铆混合连接力学性能可靠性研究

张涵寓¹, 宋周洲¹, 刘钊², 朱平¹

1. 上海交通大学机械系统与振动国家重点实验室上海 200240;
2. 上海交通大学设计学院上海 200240

收稿日期:2023-03-09 修回日期:2023-09-15 出版日期:2023-12-20 发布日期:2024-03-05
通讯作者: 朱平(通信作者),男,1966年出生,博士,教授,博士研究生导师。主要研究方向为多学科优化与不确定性优化设计、轻量化设计与制造等。E-mail:pzhu@sjtu.edu.cn
作者简介:张涵寓,男,1993年出生,博士。主要研究方向为新型复合材料连接技术。E-mail:zhanghanyu@sjtu.edu.cn
基金资助:
国家自然科学基金(12302152)和国家自然科学基金重点(U1864211)资助项目

Research on Reliability of Mechanical Properties of Carbon Fiber Reinforced Plastics and Aluminum Alloy Hybrid Joints

ZHANG Hanyu¹, SONG Zhouzhou¹, LIU Zhao², ZHU Ping¹

1. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240;
2. School of Design, Shanghai Jiao Tong University, Shanghai 200240

Received:2023-03-09 Revised:2023-09-15 Online:2023-12-20 Published:2024-03-05

摘要/Abstract

摘要： 胶铆混合连接是融合了胶接与铆接的一种新型连接形式，具备优异的力学性能。但是由于设计参数众多、制造工艺复杂，混合接头性能存在较大的波动性，难以保障其可靠性。所以需要对影响结构可靠性的关键参数进行识别与优化，从而控制混合连接的加工质量波动。研究提出一套基于三维有限元仿真的铝合金-碳纤维复合材料接头力学性能关键参数的识别与优化方法，通过构造高精度的三维有限元仿真模型，在力学仿真中引入来自材料、几何和装配的多个试验量化不确定源，实现了力学响应随机性预测。在此基础上，采用基于多项式混沌展开与Sobol指标结合的灵敏度分析策略，量化各参数对接头力学响应的相对贡献，识别出胶层厚度、搭接长度、碳纤维复合材料厚度和孔的纵向位置是对该混合连接接头最重要的四个参数。通过优化重要参数，使接头力学性能的可靠性达到设计要求。结果表明，该方法能在考虑参数不确定性的情况下，有效、准确地确定混合连接接头的重要参数，并用于提高混合连接的设计效率和质量。

关键词: 碳纤维复合材料, 铝合金, 胶铆混合连接, Sobol敏感性分析, 力学性能可靠性

Abstract: The hybrid joint has excellent mechanical properties, which combines bonding and riveting. However, due to the complex manufacturing process and numerous design parameters, it is difficult to guarantee its reliability. Therefore, it is necessary to identify and optimize the key parameters that affect the reliability of the structure, so as to control the quality fluctuation of the hybrid joint. This work proposes a set of identification and optimization methods for key parameters of the mechanical properties of CFRP-Aluminum hybrid joints based on 3D finite element simulation. By constructing a high-precision 3D finite element simulation model, a number of experimental quantitative uncertain sources from materials, geometry and assembly are introduced into the mechanical simulation, so as to realize the prediction of the randomness of the mechanical response. On this basis, the sensitivity analysis strategy based on the combination of polynomial chaos expansion and Sobol is used to quantify the relative contribution of each parameter to the response of the joint, and realized the identification of key parameters. The results show that the method can effectively and accurately determine the key parameters of the hybrid joint under the condition of considering the parameter uncertainty, and can be used to improve the design efficiency and quality of the hybrid joint.

Key words: carbon fiber reinforced plastic, aluminum alloy, hybrid joint, Sobol sensitivity analysis, reliability of mechanical properties

中图分类号:

TH122

张涵寓, 宋周洲, 刘钊, 朱平. 碳纤维复合材料与铝合金胶铆混合连接力学性能可靠性研究[J]. 机械工程学报, 2023, 59(24): 334-343.

ZHANG Hanyu, SONG Zhouzhou, LIU Zhao, ZHU Ping. Research on Reliability of Mechanical Properties of Carbon Fiber Reinforced Plastics and Aluminum Alloy Hybrid Joints[J]. Journal of Mechanical Engineering, 2023, 59(24): 334-343.

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碳纤维复合材料与铝合金胶铆混合连接力学性能可靠性研究

Research on Reliability of Mechanical Properties of Carbon Fiber Reinforced Plastics and Aluminum Alloy Hybrid Joints

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