锻压技术

多层钢-铝板材搭接形式对铆接件的剪切力学性能的影响

英文标题：Influence of lap form for multi-layer steel-aluminum sheet on shear mechanical properties for riveted parts

单位：1. 广西科技大学机械与汽车工程学院 2.广西科技大学广西土方机械协同创新中心 3.广西科技大学广西汽车零部件与整车技术重点实验室 4. 柳州职业技术学院汽车工程学院

分类号：TG938

出版年,卷(期):页码：2024,49(4):131-137

摘要：

使用HC340/590DP先进高强度钢和JDA1b铸铝材料组合制备自冲铆接接头，采用不同的搭接形式对自冲铆接接头进行实验，以探究其力学性能与搭接方式的关系。通过接头剖面金相评价了接头质量，使用静态力学拉伸探究了接头的强度、失效形式，并通过对载荷-位移曲线进行积分得出各类型接头的能量吸收特性。实验结果表明，伸长率为11%以上的JDA1b铸铝作为底层板材可以为接头的有效成形提供保障；3种不同搭接形式的接头平均失效载荷为FS1(5.04 kN)<FS2(7.08 kN)<FS3(9.88 kN)；接头能量吸收值为ES1(1.435 J)<ES3(4.226 J)<ES2(27.525 J)。以接头失效载荷及能量吸收等力学响应作为工程结构应用指标，在受外部载荷或脱落力影响明显的结构中推荐使用S3搭接组合形式；在受疲劳振动影响明显的部件中推荐使用较高能量吸收值的S2搭接组合形式。

The self-piercing riveting joint was prepared by material combination of HC340/590DP advanced high-strength steel and JDA1b cast aluminum, and the self-piercing riveting joints were tested by different lap forms to explore the relationship between its mechanical properties and lap forms. Then, the quality of joint was evaluated by the metallography of the joint profile, and the strength and failure mode of joint were explored by static mechanical tensile. Furthermore, the energy absorption characteristics of each type of joint were obtained by integrating the load-displacement curves. The test results show that the JDA1b cast aluminum with an elongation of more than 11% can be used as the bottom sheet to provide a guarantee for the effective forming of joints. The average failure load of joints with the three different lap forms are FS1(5.04 kN)<FS2(7.08 kN)<FS3(9.88 kN). The energy absorption values of joints are ES1(1.435 J)<ES3(4.226 J)<ES2(27.525 J). Taking the mechanical response such as failure load and energy absorption of joint as the application index of engineering structure, it is recommended to use the S3 combination form in structures that are obviously affected by external load or shedding force. For components obviously affected by fatigue vibration, it is recommended to use the S2 combination form with higher energy absorption value.

基金项目：

广西科技基地和人才专项（桂科AD22080042）；广西重点研发计划（桂科AB23026104）

作者简介：罗国健（1996-），男，硕士研究生 E-mail：1872558980@qq.com 通信作者：孙有平(1979-)，男，博士，教授 E-mail：syptaiji@126.com

参考文献：

[1]林锐.轻金属材料在汽车轻量化中的应用[J].汽车测试报告, 2022，(7):127-129.

Lin R. The application of light metal materials in automobile lightweight[J].Car Test Report,2022，(7):127-129.

[2]郑伟,柳叶芳,业飞,等.耐热镁合金材料的研究和应用现状[J].世界有色金属, 2021, (4):125-126.

Zheng W,Liu Y F,Ye F,et al. Research and application status of heat resistant magnesium alloy materials[J].World Nonferrous Metals, 2021, (4):125-126.

[3]林涛,陈吉清,饶健强，等.基于概念开发及轻量化结构的车身零件板厚设计优化[J].机械设计与制造,2011,(9):10-12.

Lin T,Chen J Q,Rao J Q,et al. Optimization of body part thickness design based on concept development and lightweight structure[J].Machinery Design & Manufacture,2011,(9):10-12.

[4]黄颖.汽车零部件结构性能分析及关键部件轻量化设计[D]. 重庆：重庆理工大学,2017.

Huang Y.Structural Performance Analysis of Auto Parts and Lightweight Design of Key Components[D]. Chongqing：Chongqing University of Technology,2017.

[5]叶正挺.新能源汽车铝合金轻量化及其连接技术发展现状[J].科技创新与应用,2023,13(20):155-158.

Ye Z T.Development status of aluminum alloy lightweight and connection technology for new energy vehicles[J]. Technology Innovation and Application,2023,13(20):155-158.

[6]闫旭东,杨博.半空心自冲铆连接技术在白车身的应用[J].汽车工艺师, 2018，(6):61-64.

Yan X D,Yang B. Application of semihollow selfpunch riveting joint technology in body in white[J].Auto Manufacturing Engineer, 2018，(6): 61-64.

[7]邓成江,何晓聪,邢保英，等.基于3层板材搭接的自冲铆连接性能研究[J].机械设计,2015,32(6):83-87.

Deng C J,He X C,Xing B Y,et al.Research on selfriveting joint performance based on threelayer sheet metal lap joint[J].Journal of Machine Design,2015,32(6):83-87.

[8]Wang J, Zhang G W, Zheng X F,et al.A selfpiercing riveting method for joining of continuous carbon fiber reinforced composite and luminum alloy sheets[J].Composite Structures, 2020, 259(3):113219.

[9]王远,李永兵,金鑫,等.铝代钢对三层板接头力学性能影响规律研究[J].汽车工程学报, 2013, 3(5): 324-331.

Wang Y,Li Y B,Jin X,et al.Study on the influence of aluminum substitute steel on the mechanical properties of threelayer plate joint[J].Chinese Journal of Automotive Engineering, 2013, 3(5): 324-331.

[10]方坤鹏,翟华,吴玉程，等.新能源汽车一体化铝合金压铸结构件成形工艺关键技术[J].中国铸造装备与技术,2023,58(3):33-39.

Fang K P,Zhai H,Wu Y C,et al.Key technology of forming process of integrated aluminum alloy diecasting structural parts for new energy vehicles[J].China Foundry Machinery & Technology,2023,58(3):33-39.

[11]黄海鸿,汤杰,钱正春.曲轴再制造耐磨熔覆层工艺参数优化[J].中国机械工程, 2018, 29(21): 2606-2614.

Huang H H,Tang J,Qian Z C.Optimization of process parameters of wearresistant cladding layer for crankshaft emanufacturing[J]. China Mechanical Engineering, 2018, 29(21): 2606-2614.

[12]潘青林,李绍禄,邹景霞，等.微量Mn对AlMgSi合金微观组织与拉伸性能的影响[J].中国有色金属学报,2002，12(5):972-976.

Pan Q L,Li S L,Zhou J X,et al. Effect of trace Mn on microstructure and tensile properties of AlMgSi alloy[J].The Chinses Journal of Nonferrous Metals,2002，12(5):972-976.

[13]刘超,文锋,陈继强,等.添加Sc,Zr和退火对AlSi合金铸态力学性能的影响[J].材料研究学报, 2021，35(2):93-100.

Liu C,Wen F,Chen J Q,et al.Effect of addition of Sc,Zr and annealing on mechanical properties of AlSi alloy as cast[J].Chinese Journal of Materials Research, 2021，35(2):93-100.

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