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Simulation and test on process of percussive Impact riveting |
QU Wei-wei1, SHI Xin1, DONG Hui-yue1, FENG Pu-jia2,ZHU Ling-sheng1, KE Ying-lin1 |
1.Department of Mechanical Engineering, Zhejinag University, Hangzhou 310027, China; 2.Hanzhong Aircraft Company, Avic Aircraft Co.ltd, Hanzhong 723213, China |
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Abstract Kinematic modeling and simulation of percussive impact riveting are presented to improve the quality of riveting process. Kinematic model of rivet gun is setup to determine the output speed and frequency of hammer under different input pneumatic pressure, ranging from 0.2 MPa to 0.6 MPa; Process of percussive impact riveting is simulated in ABAQUS, and by setting different speed of hammer (acquired in the kinematic model), the corresponding riveting time is acquired when the driven rivet head dimension is acceptable. Finally, riveting tests are carried out for model validation donghuiyue, Deviation between the simulation and experimental results is under 15%, which shows the effectiveness of the proposed method. All above end up with an conclusion that input pressure and riveting time has a great influence on riveting process.
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Published: 01 August 2014
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气动锤铆过程仿真分析与试验
为提高锤铆工艺质量,提出一种对锤铆过程仿真分析的方法,并获得锤铆工艺所需铆接时间.建立气动铆枪的运动学模型,结合Matlab仿真得到不同输入气压下(0.2~0.6 MPa)冲锤的冲击速度及其冲击频率;在ABAQUS中对锤铆过程进行有限元分析,将运动学模型的仿真结果(冲锤的冲击速度及频率)应用至有限元模型中,以获得规定的镦头尺寸为目标,得到不同输入气压下需要的铆接时间.实验得到铆钉在0.2~0.6 MPa不同气压下的铆接时间,实验值与仿真值的偏差在15%之内,验证此仿真方法的可行性.结果表明,铆枪的输入气压及铆接时间是影响锤铆工艺的关键因素.
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