铝-铜合金异质材料复合搭接自冲铆性能研究

邓成江; 何晓聪; 王玉奇; 周森

doi:10.13433/j.cnki.1003-8728.2014.1026

铝-铜合金异质材料复合搭接自冲铆性能研究

doi: 10.13433/j.cnki.1003-8728.2014.1026

1.
昆明理工大学机电工程学院, 昆明 650500

基金项目:

国家自然科学基金项目(50965009)和昆明理工大学分析测试基金项目(2011489)资助

详细信息

作者简介:
邓成江(1985-)，硕士研究生，研究方向为薄板材料连接新技术和机械系统可靠性研究，changjiang-d@163.com;何晓聪(联系人)，教授，博士生导师，xiaocong-he@126.com

邓成江(1985-)，硕士研究生，研究方向为薄板材料连接新技术和机械系统可靠性研究，changjiang-d@163.com;何晓聪(联系人)，教授，博士生导师，xiaocong-he@126.com

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出版历程
- 收稿日期: 2013-04-05

Study on the Performance of Self-piercing Riveting for Composite Lap of Aluminum-copper Alloy Dissimilar Sheet Materials

1.
Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500

摘要

摘要: 通过试验方法研究不同刺穿方向下铝合金和铜合金(简称Al-Cu)组合的自冲铆(SPR)接头的力学性能,并进行材料性能测试。对Cu-Cu的SPR接头进行铆接试验和有限元模拟以分析其可成形性。对不同刺穿方向下Al和Cu组合的SPR接头进行力学性能测试,获得其载荷-位移曲线。结果表明:SPR接头抗拉伸剪切强度高于抗剥离强度;Cu-Cu接头强度最高,Cu-Al次之,Al-Cu最小。拉伸剪切条件下,内锁结构决定接头力学性能,失效模式均为铆钉从下板中被拉出;剥离条件下,内锁结构和板材特性决定接头力学性能,上板强度较小时,铆钉从上板铆孔处脱离;下板强度较小时,铆钉脱离下板;上、下板强度较高且接近时,铆钉脱离下板。
- 自冲铆 /
- 强度 /
- 异质材料 /
- 失效模式
Abstract: The mechanical performance of self-piercing riveted (SPR) joint in aluminum and copper alloy (Al-Cu)sheets with different piercing directions is investigated experimentally, and the material properties are tested.Theformability of SPR Cu-Cu joint is analyzed by riveting experiment and finite element analysis.The mechanicalperformances of SPR joints in Al-Cu with different piercing directions are tested, and the load-displacement curves areobtained.The result show that the tensile-shear strength of SPR joint is higher than its peel strength.The strength of Cu-Cu joint is the highest, Cu-Al joint is the secondary and the Al-Cu joint is the smallest.Under the tensile-shearcondition, the mechanical performance of the joint is determined by the structure of interlock, the failure mode is therivet pull-out from the lower sheet.Under the peel condition, the mechanical performance of joint is determined by thestructure of interlock and the behavior of sheet material.If the strength of upper sheet is smaller, the rivet is pulled outfrom riveting hole on the upper sheet.If the strength of lower sheet is smaller, the rivet is pulled out from the lowersheet.If the strengthes of upper and lower sheets are big and identical, the rivet is also pulled out from the lower sheet.
- aluminum copper alloys /
- automobile bodies /
- computer simulation /
- dissimilar materials riveting

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参考文献(12)

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