中国机械工程 ›› 2026, Vol. 37 ›› Issue (6): 1531-1539.DOI: 10.3969/j.issn.1004-132X.2026.06.025

• 工程前沿 • 上一篇    

镁/铝异质材料实心自冲铆接有限元建模及试验研究

曾凯1(), 张文韬1, 张洪申1, 邢保英1(), 黄俊智1, 李银波2   

  1. 1.昆明理工大学云南省先进装备智能制造技术重点实验室, 昆明, 650500
    2.广州汽车集团股份有限公司汽车工程研究院, 广州, 511434
  • 收稿日期:2025-06-06 出版日期:2026-06-25 发布日期:2026-07-17
  • 通讯作者: 邢保英
  • 作者简介:曾凯,男,1976年生,博士、副教授,硕士研究生导师。研究方向为材料连接技术及质量检测与评估。E-mail:kmzk201109@163.com
    邢保英*(通信作者),女,1986年生,博士、副教授,硕士研究生导师。研究方向为薄板材料连接技术及可靠性工程。E-mail:xbb0808@163.com

Finite Element Modeling and Experimental Research on Solid Self-piercing Riveting of Magnesium/Aluminum Dissimilar Materials

ZENG Kai1(), ZHANG Wentao1, ZHANG Hongshen1, XING Baoying1(), HUANG Junzhi1, LI Yinbo2   

  1. 1.Yunnan Provincial Key Laboratory of Intelligent Manufacturing Technology for Advanced Equipment,Kunming University of Science and Technology,Kunming,650500
    2.GAC Automotive Research & Development Center,Guangzhou,511434
  • Received:2025-06-06 Online:2026-06-25 Published:2026-07-17
  • Contact: XING Baoying

摘要:

通过镁合金材料力学性能标定试验构建Johnson-Cook本构模型及断裂失效模型,建立实心自冲铆接成形过程仿真模型,分析机械内锁区材料的塑性变形和应力分布;开展三因素三水平响应面试验,揭示工艺参数的主效应与交互作用规律,探讨工艺参数优化路径。仿真分析与试验研究表明,建立的回归模型具有较高的工程应用可靠性;相较于传统半空心自冲铆接,采用实心自冲铆接并优化铆接工艺参数能够抑制机械内锁形变区表面及内部宏观裂纹的出现,实现镁/铝异质薄板材料高效、可靠连接。通过回归模型得到的最佳参数组合的最大失效载荷为3359 N,最大能量吸收值为5.59 J。

关键词: 铸造镁合金, 实心自冲铆, 本构模型, 有限元仿真, 工艺优化, 失效载荷

Abstract:

Through the mechanics property calibration tests of magnesium alloy materials, the Johnson-Cook constitutive and fracture failure models were constructed, and a simulation model of the solid self-piercing riveting processes was established to analyze the plastic deformations and stress distribution of the materials in the mechanics interlock areas. A three-factor and three-level response surface experiment was carried out to reveal the main effects and interaction laws of the processing parameters, and to explore the optimization path of processing parameters. Simulation analysis and experimental results show that, the established regression model has high reliability for engineering applications and compared with the traditional self- piercing riveting, the use of solid self-piercing riveting and the optimization of riveting parameters may suppress the appearance of macroscopic cracks on the surfaces and inside the mechanics interlock deformation areas, and achieve efficient and reliable connection of magnesium/aluminum dissimilar thin- sheet materials. The maximum failure load under the optimal parameter combination obtained from the regression model is 3359 N, and the maximum energy absorption value is 5.59 J.

Key words: casting magnesium alloy, solid self-piercing riveting, constitutive model, finite element simulation, process optimization, failure load

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