第42卷第4期 Vol.42No.4
+特种成形
假压技术
FORGING &STAMPING TECHNOLOGY
碳纤维一铝合金电磁铆接与准静态压铆对比
李光耀，2，冯雪瑞，蒋浩"，齐麟，崔俊佳12，张旭3
2017年4月 Apr.2017
（1.湖南大学汽车车身先进设计制造国家重点试验室，湖南长沙410082；2.智能型新能源汽车协同创新中心，
上海201804；3.湖南科技大学机电工程学院，湖南湘潭411100）
摘要：为了探究电磁铆接技术在碳纤维复合材料上的可行性，采用碳纤维一铝合金结构为研究对象。探究了碳纤维-铝合金电磁铆接接头的干涉量及剪切、拉脱性能，并与传统准静态压铆技术进行了对比。结果表明：无论是4mm铆钉，还是 6mm铆钉，电磁铆接结构相对干涉量不仅均勾性更好，面且平均值更高，分别从4.96%提升到5.20%，6.85%提升到 7.85%；电磁铆接接头剪切性能有较大提高，对于4mm铆钉和6mm铆钉，电磁铆接最大剪切力相比准静态压锦分别提高了19.7%和5.2%；电磁铆接接头拉脱性能有较小提高，对于(4mm铆钉和6mm铆钉，电磁铆接最大拉脱力相比准静态压铆提高了3.9%和6.6%。结果说明电磁接技术更适合复合材料的连接，
关键词：电磁铆接；准静态压铆；干涉量；剪切强度；拉脱强度 DOI: 10. 13330/j. issn. 1000-3940. 2017. 04. 016
中图分类号：TG391
文献标识码：A
文章编号：1000-3940（2017）04-0085-06
Comparisonelectromagnetic rivetingwith quasi-static pressureriveting for
CFRP-aluminum alloysheets
Li Guangyao'.2,Feng Xuerui',Jiang Hao',Qi Lin',Cui Junjia'.2, Zhang Xu
(1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082 , China ; 2. Joint Centre for Intelligent New Energy Vehicles, Shanghai 201804, China; 3. College of Mechanical and Electrical Engineering.
Hunan University of Science and Technology, Xianglan 411100, China)
Abstract: In order to explore the feasibility of electromagnetic riveting ( EMR) technology in carbon fiber reinforced plastics ( CFRP) , the hybrid CFRP aluminum alloy structures were taken into account. Then, the interference, shear and pull-out properties of electro-magnetic riveted joints were studied, and the comparison with traditional quasi-static riveted ( QSR) joints was carried out. The results show that the relative interference for EMR structures is more uniformity, and the average value of interference is higher for both dp4 mm rivet and 6 mm rivet. Specifically, they are increased from 4. 96% to 5. 20% and from 6. 85% to 7. 85% , respectively. However, th shear properties of electromagnetic riveted joints are greatly improved. For cb4 mm rivet and db6 mm rivet, the maximum shear loads of electronagnetic riveted joints are 19. 7% and 5. 2% higher than that of QSR joints, respectively. And the pull-out properties are slightly improved. Furthermore, the maximum pull-out loads of electromagnetic riveted joints is 3. 9% and 6. 6% higher than that of QSR joints, respectively. The results demonstrate that the EMR technology fits for composites connection more.
Key words : electromagnetic riveting: quasi-static press
e riveting; interference; shear strength; pull out strength
近年来，车身轻量化一直是热门的研究话题，结构轻量化和材料轻量化是实现车身轻量化的两个主要方法。目前，全钢车身结构优化最高可实现 7%减重，基本达到减重极限，采用轻质高强度铝合
收稿日期：20161122；修订日期：2017-0220
基金项目：国家自热科学基金资助项目（61232014，51405149）
作者简介：李光耀（1963-），男，博士，教授 E-mail: gyle hnu. edu. cn
通讯作者：张旭（1986-），男，博士，讲师
E-mail: ddzhangxu@ 126. com 万方数据
金代替钢制车身减重高达30%~50%，因此，可以认为材料轻量化程度明显高于结构轻量化。铝合金[1-3]、复合材料[3-4]等轻量化材料都已被引人到车身设计当中，无其是复合材料更是新能源汽车的首选材料，因其材料密度低、比强度高、比刚度高等优点，非常适合新能源汽车的研发需求。与此同时，复合材料的大量使用导致目前加工制造、装配技术面临新的挑战。其中，复合材料与金属材料无损连接是影响车身结构服役性能的重要装配问题。现行通用的复合材料和金属材料的连接方式主要有
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