考虑应变率差异的铆接仿真建模和实验研究  

Study on Simulation Modeling and Experiment of Riveting Considering Strain Rate Difference

作　　者：张帅[1] 赵琪 王华[1] ZHANG Shuai;ZHAO Qi;WANG Hua(Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures,Shanghai Jiaotong University,Shanghai 200240,China;Shanghai Aircraft Manufacturing Co.,Ltd,Shanghai 201324,China)

机构地区：[1]上海交通大学上海市复杂薄板结构数字化制造重点实验室,上海200240 [2]上海飞机制造有限公司,上海201324

出　　处：《机械设计与制造》2018年第9期197-200,共4页Machinery Design & Manufacture

摘　　要：压铆连接是飞机装配的主要连接方式。已有限元法主要考虑铆接工艺参数、接触设置和边界条件选取等方面,对于铆接中铆钉不同位置变形时的应变率差异的影响缺乏研究。借助SHPB技术,建立了单一应变率模型和考虑应变率差异有限元仿真模型作为对比,揭示了铆接干涉量分布情况。进而分析了应变率差异原因和影响,并通过自动钻铆实验进行干涉量对比验证。结果表明,考虑应变率差异的有限元模型可以有效的提高仿真精度,为最佳干涉量的研究提供了模型基础。Rivetingis the main connection mode of Aircraft assembly.Current FE simulation method is focus on the riveting parameters,contact mode and boundary conditions,while lacking of studying on the strain rate difference of riveting deformation.With the help SHPB technology,the model which considering the strain rate difference and the same strain model were setup as contrast to discover the interference value distribution.Then the cause and consequence of strain rate difference was analyzedin in it,and the interference value is contrasted with result of experiment.The experiment result shows that the model considering strain rate difference improved the simulation accuracy efficiently,and provides model foundation in the acquiring of optimum interference.

关 键 词：飞机装配 铆接 有限元仿真 应变率 

分 类 号：TH16[机械工程—机械制造及自动化]