基于ABAQUS的气动锤铆研究  

Research on pneumatic hammer riveting based on ABAQUS

作　　者：刘登伟 Liu Dengwei(Institute of Aeronautical Manufacturing Technology,COMAC Shanghai Aircraft Manufacturing Co.,Ltd.,Shanghai 201324,China)

机构地区：[1]中国商飞上海飞机制造有限公司航空制造技术研究所,上海201324

出　　处：《锻压技术》2022年第12期142-147,共6页Forging & Stamping Technology

基　　金：国家重点研发计划“智能机器人重点专项”(2019YFB1311200)。

摘　　要：为了减少气动锤铆仿真所需的试验参数,并降低气动锤铆仿真的计算难度,基于冲量定理提出一种对气动锤铆进行仿真分析的方法。首先,介绍了气动锤铆原理,并以铆克为对象,对气动铆枪的动力学过程进行了分析,得到单次冲击周期、冲击力峰值和能量转移率的关系式。以此为理论基础,同时基于ABAQUS软件建立了气动锤铆的动力学有限元模型。然后,进行了气动锤铆试验,将试验所对应的铆克质量、冲击力峰值及冲击频率输入了有限元模型。最后,将得到的模型结果和试验结果,从镦头直径、镦头高度以及铆钉直径3个方面进行了对比,模型结果和试验结果的相对误差均在2%以内。结果表明提出的仿真分析方法是正确、有效的。In order to reduce the experimental parameters required and the simulation calculation difficulty for the pneumatic hammer riveting simulation,a simulation analysis method of the pneumatic hammer riveting was proposed based on impulse theorem.Firstly,the principle of pneumatic hammer riveting was introduced,for the rivet,the dynamic process of pneumatic riveting gun was analyzed,and the relational expression between single impact cycle,peak value of impact force and energy transfer rate was obtained.Taking the relational expression as the theoretical basis and based on software ABAQUS,the dynamic finite element model of the pneumatic hammer riveting was establish.Consequently,the experiment of pneumatic hammer riveting was carried out,and the rivet mass,peak value of impact force and impact frequency corresponding to the experiment were input into the finite element model.At last,the obtained model results and experiment results were compared from the three aspects of upsetting head diameter,upsetting head height and rivet diameter.The relative error of the model results and the experimental results was within 2%.The results show that the proposed simulation analysis method is correct and effective.

关 键 词：飞机装配 锤铆 冲量定理 镦头直径 镦头高度 铆钉直径 

分 类 号：V262.4[航空宇航科学与技术—航空宇航制造工程]