摘要
为了研究粘铆复合接头的胶层厚度对接头的成形质量和服役性能的影响,建立了无铆钉粘铆成形有限元模型,并通过实验验证有限元模型的有效性。利用有限元模型分析了接头成形后胶层的分布规律及接头成形过程中胶层的变化趋势,研究胶层厚度对接头成形的影响。结果表明:胶层厚度从接头底部中心到自锁处呈先增大后减小的趋势,其中底部圆角处胶层厚度最大;铆接过程中胶层厚度随冲头行程增加而变化;胶层厚度影响接头的自锁值与颈厚值。
The clinch-adhesive hybrid joining technology has many advantages such as good abradability and good energy absorption.This technology is very promising and can be widely used in the aspect of car body.To study the influence of the thickness of adhesive in the clinch-adhesive hybrid joint on the forming quality and the joint performance,a finite element model(FEM)of clinch-adhesive hybrid joining was established,and was validated by the experiment.The FEM is applied to analyze the adhesive layer distribution in the joint and the variation tendency of adhesive layer during the forming process,and the influence of the adhesive thickness on the forming quality was investigated.The results indicate that the adhesive thickness firstly decreases and then increases from the centre of joint bottom to the interlock region,and the thickest part is locate in the bottom corner.During the clinching process,the thickness distribution of adhesive varies with the increase in the punch displacement,the adhesive thickness influences the interlock value and the neck thickness of the joint.
作者
庄蔚敏
施宏达
解东旋
杨冠男
ZHUANG Wei-min;SHI Hong-da;XIE Dong-xuan;YANG Guan-nan(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;Department of Technical Development,FAW?Volkswagen Automobile Co.Ltd.,Changchun 130011,China;Safety Technology Development Division,Geely Automobile Research Institute(Ningbo),Ningbo 315336,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2020年第1期100-106,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51775227,51375201)
国家重点研发计划项目(2016YFB0101601)
吉林省省校共建计划专项项目(SXGJSF2017-2-1-5).
关键词
材料合成与加工工艺
无铆钉粘铆接头
胶层分布
成形过程
有限元仿真
materials synthesis and processing technology
clinch-adhesive joint
adhesive layer distribution
forming process
finite element simulation
作者简介
庄蔚敏(1970-),女,教授,博士生导师.研究方向:车身结构设计与优化,有限元分析和金属成形技术.E-mail:zhuangwm@jlu.edu.cn
