摘要
以汽车车身异种金属板料的胶铆复合连接为研究对象,利用Simufact Forming软件建立胶接与自冲铆接复合连接的有限元模型,上板采用1 mm DC04钢板、下板采用2 mm 5052铝合金板,对采用环氧树脂结构胶的胶铆复合连接过程进行有限元仿真。通过改变铆钉高度、凹模深度、凸台高度及下压速度分析胶铆复合接头的内锁值、钉头高度、剩余厚度的具体参数,得出铆钉高度5 mm、凹模直径10 mm、凹模深度1.9 mm、凸台高度0.9 mm、下压速度为45 mm/s时成形最佳。通过铆接设备对仿真结果进行验证,两者结果中铆接力变化趋势与剪切拉伸失效模式相同,接头表征参数误差均在10%以内,进而验证了Simufact Forming软件的可靠性较高。
This study focuses on the adhesive-rivet composite connection of automotive body dissimilar metal sheets.A finite element model of adhesive riveting and self-piercing riveting composite connection established using Simufact Forming software.The upper plate made of 1mm DC04 steel plate,and the lower plate made of 2 mm 5052 aluminum alloy plate.The adhesive-rivet composite connection process using epoxy resin structural adhesive simulated using finite element analysis.By analyzing the specific parameters of the internal locking value,nail head height,and remaining thickness of the adhesive-rivet composite joint by changing the height of the rivet,the depth of the concave mold,the height of the convex platform,and the pressing speed,it found that the optimal forming process achieved when the rivet height 5 mm,the diameter of the concave mold 10 mm,the depth of the concave mold 1.9 mm,the height of the convex platform 0.9 mm,and the pressing speed 45 mm/s.And the simulation results are verified through riveting equipment,and the trend of riveting force change in both results the same as the shear tensile failure mode.The error of joint characterization parameters within 10%,which further verified the high reliability of Simufact Forming software.
作者
谢昊东
张红霞
李兵
张鹏
覃宇
Xie Haodong;Zhang Hongxia;Li Bing;Zhang Peng;Qin Yu(Hubei University of Automotive Technology,Shiyan 442002)
出处
《汽车工艺与材料》
2024年第8期27-32,共6页
Automobile Technology & Material
基金
湖北省重点研发计划项目(2022AAA001)
湖北省重点研发计划项目(2021BAB019)。
关键词
数值模拟
胶铆复合连接
接头成形
Numerical simulation
Adhesive-rivet
composite connection
Joint forming
