锻压技术

钢-钢-铝三层板自冲铆接成形质量及力学性能研究

英文标题：Study on forming quality and mechanical properties of self-piercing riveting for steel-steel-aluminum three-layer sheet

作者：于万元 1 王超2 龙广鹏3 王国春3

单位：1. 柳州职业技术学院汽车工程学院 2. 湖南大学汽车车身先进设计制造国家重点实验室 3. 广西艾盛创制科技有限公司

关键词：预开孔自冲铆接高强度钢压铸铝合金力学性能失效模式

分类号：TG938

出版年,卷(期):页码：2024,49(4):153-160

摘要：

研究了高强度钢(HC420/780DP)-高强度钢(HC340/590DP)-压铸铝合金(JDA1b和AlSi10MnMgT7)3层板预开孔自冲铆接的可行性，并评估了钢板厚度及下层板材料对接头成形质量的影响。通过剪切和十字拉伸试验分析了接头的力学性能，并观察了其失效形式。结果表明：使用上层板预开孔方法能够实现三层板间的自冲铆接；接头切底量随着上层板和中层板厚度的增加而降低，并且中层板厚度对接头切底量的影响更为明显；相比JDA1b压铸铝合金，下层板材料为AlSi10MnMgT7压铸铝合金的接头的切底量更大；接头峰值载荷及能量吸收均随着接头切底量的降低而降低；剪切接头和十字拉伸接头的失效模式均为铆钉与下层板脱离；铝材断裂失效分为脆性断裂和韧性断裂。

The feasibility of pre-holed self-piercing riveting (PH-SPR) for three-layer sheets of high-strength steel (HC420/780DP), high-strength steel (HC340/590DP) and die-casting aluminum alloy (JDA1b and AlSi10MnMg-T7) was investigated. The effects of steel sheet thickness and lower sheet material on the forming quality of joint were evaluated. The mechanical properties of joints were analyzed through the shear and cross-tension tests, and the failure modes of joints were observed. The results indicate that the self-piercing riveting of three-layer sheets can be achieved by using the method of pre-hole on the upper sheet. The undercut amount of joints decreases with the increasing of thicknesses for the upper and middle sheets, and the thickness of the middle sheet has a more pronounced effect on the undercut amount of joints. The joints with AlSi10MnMg-T7 die-casting aluminum alloy as lower sheet material have larger undercut amount than that with JDA1b die-casting aluminum alloy as lower sheet. Furthermore, the peak load and energy absorption of joints decrease with the decreasing of the undercut amount of joints. The failure modes of both shear joint and cross-tension joint are rivets pulled out from the lower sheet. The fracture failure of aluminum materials can be divided into brittle fracture and ductile fracture.

基金项目：

广东省重点领域研发计划项目(2022B0909070001)；2024年度广西高校中青年教师科研基础能力提升项目（2024KY1097）

作者简介：于万元(1987-)，女，硕士，讲师 E-mail：ywy196364@126.com 通信作者：王国春(1979-)，男，博士，高级工程师 E-mail：wang_guochun@126.com

参考文献：

[1]史国宏, 陈勇, 杨雨泽, 等. 白车身多学科轻量化优化设计应用[J]. 机械工程学报, 2012, 48(8): 110-114.

Shi G H, Chen Y, Yang Y Z, et al. BIW architecture multidisciplinary light weight optimization design[J]. Journal of Mechanical Engineering, 2012, 48(8): 110-114.

[2]金鑫, 李永兵, 楼铭, 等. 基于正交试验的铝合金-高强钢异种金属自冲铆接工艺优化[J]. 汽车工程学报, 2011, 1 (4): 185-191.

Jin X, Li Y B, Lou M, et al. Process optimization of selfpiercing riveting aluminum to high strength steel using doe method[J]. Chinese Journal of Automotive Engineering, 2011, 1(4): 185-191.

[3]扶文生, 张先炼, 张青. 5083铝合金自冲铆接成形机理与失效分析[J]. 塑性工程学报, 2023, 30(3): 91-98.

Fu W S, Zhang X L, Zhang Q. Forming mechanism and failure analysis of selfpiercing riveted of 5083 aluminum alloys[J]. Journal of Plasticity Engineering, 2023, 30(3): 91-98.

[4]Zhao H, Han L, Liu Y P, et al. Modelling and interaction analysis of the selfpierce riveting process using regression analysis and FEA[J]. The International Journal of Advanced Manufacturing Technology, 2021, 113(1-2): 159-176.

[5]Zhou Z J, Huang Z C, Jiang Y Q, et al. Joining properties of SPFC440/AA5052 multimaterial selfpiercing riveting joints[J]. Materials, 2022, 15(9): 2962.

[6]Achira S, Abe Y, Mori K I. Selfpierce riveting of three thin sheets of aluminum alloy A5052 and 980 MPa steel[J]. Materials, 2022, 15(3): 1010.

[7]Karathanasopoulos N, Pandya K S, Mohr D. An experimental and numerical investigation of the role of rivet and die design on the selfpiercing riveting joint characteristics of aluminum and steel sheets[J]. Journal of Manufacturing Processes, 2021, 69: 290-302.

[8]廖品翔, 林建平, 闵峻英, 等.下板厚度对钢/铝自冲铆接接头单搭剪切强度的影响[J]. 锻压技术, 2022, 47(7): 145-153.

Liao P X, Lin J P, Min J Y, et al. Influence of lower plate thickness on single lap shear strength of joint in steel and aluminum selfpiercing riveting[J]. Forging & Stamping Technology, 2022, 47(7): 145-153.

[9]丁文有, 何晓聪, 刘佳沐, 等. 碳纤维增强聚合物-AA5052铝合金三层板自冲铆接性能[J]. 科学技术与工程, 2018, 18(25): 143-147.

Ding W Y, He X C, Liu J M, et al. Performance of selfpierce riveting based on carbon fiber reinforced polymerAA5052 aluminum alloy threelayer sheets[J]. Science Technology and Engineering, 2018, 18(25): 143-147.

[10]何博赟. 多层钢铝混合材料自冲铆接工艺及其接头力学性能研究[D]. 长沙：湖南大学, 2020.

He B Y. Research on Selfpiercing Riveting Process and Joint Mechanical Property of Multilayer Steel and Aluminum Mixed Materials[D]. Changsha: Hunan University, 2020.

[11]Mori K, Abe Y, Kato T. Selfpierce riveting of multiple steel and aluminium alloy sheets[J]. Journal of Materials Processing Technology, 2014, 214(10): 2002-2008.

[12]王世鹏, 何晓聪, 刘佳沐, 等. 三明治结构自冲铆接头力学性能及失效模式分析[J]. 有色金属工程, 2020, 10(8): 27-32.

Wang S P, He X C, Liu J M, et al. Analysis of mechanical properties and failure modes of sandwich structure selfpiercing riveting joint[J]. Nonferrous Metals Engineering, 2020, 10(8): 27-32.

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