摘要
车身轻量化的趋势使大量轻型材料被采用,传统的连接工艺不能满足异种材料连接的需要,近期发展起来的压力连接是用于连接薄壁板材的新型连接技术,成为解决方案之一。为解决板材压力连接点抗剪强度与抗拉强度的预测问题,建立板材及压力连接模具的三维有限元模型,对板材压力连接及卸载过程、剪切及剥离试验进行了仿真及实验研究,通过仿真结果与试验结果的对比,结果表明:仿真模拟可以较好地预测压力连接点抗剪强度与抗拉强度,有利于提高压力连接模具的开发效率,减少试验成本。
Because of the trend of developing light-weight of car body, many light-weight materials are adopted. Traditional connecting techniques can not satisfy the needs of connecting different materials. The recent developed technique, mechanical clinching, which is used for connecting metal sheets, is one of solutions. In order to solve the problem of predicting shear strength and tensile strength of clinched connections for steel sheets, the three -dimensional finite element model of steel sheets and clinching tools were established, and the mechanical clinching process, unloading process, shear test and peel test were stimulated and experimented. Through comparing the results of simulation and test, it demonstrates that the simulation method can be used to predict shear strength and tensile strength of clinched connections, so the effwiency of developing clinching tool can be improved and reduce the test cost.
出处
《机械设计与制造》
北大核心
2014年第1期11-14,共4页
Machinery Design & Manufacture
基金
科技部国家科技支撑计划(2011BAG03B02)
高等学校博士学科点专项科研基金资助(20120172120002)
关键词
压力连接
仿真分析
抗剪强度
抗拉强度
Mechanical Clinching
Simulation Analysis
Shear Strength
Tensile Strength
