ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Riveting force computation model based on formed head inhomogeneous deformation
Received date: 2015-12-14
Revised date: 2016-02-17
Online published: 2016-03-02
Supported by
National Natural Science Foundation of China (51375396); AVIC Production-Study-Research Cooperative Innovation Project (cxy2014XGD07)
The riveting force is one of the important parameters to guarantee riveting quality. However, traditional approaches are concentrated on experience or simplified theoretical model and do not consider the impact of formed head inhomogeneous deformation, which brings errors. This paper presents a riveting force computation model to improve the effectiveness where the formed head inhomogeneous deformation is taken into consideration. In this paper, the riveting process is divided into four stages according to the rivet material flow trends, and the maximum riveting force position can be determined. Based on the ultimate stress analysis of thick-walled cylinder compressed into plastic state, the computational model of riveting force is built in the inhomogeneous deformation situation. The model parameter is solved combining with the volume invariant assumption. Finally, 4 mm and 5 mm diameter protruding head rivets are selected to conduct the research. Under the same riveting force, the ABAQUS and G86 drilling and riveting machine are used to finish numerical simulation and riveting experiment respectively. The results show that the difference is less than 5%, comparing the ideal dimension with numerical simulation and experiment. Therefore, the computation model of riveting force has its effectiveness.
CHANG Zhengping , WANG Zhongqi , WANG Binbin , KANG Yonggang , LUO Qun . Riveting force computation model based on formed head inhomogeneous deformation[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(7) : 2312 -2320 . DOI: 10.7527/S1000-6893.2016.0043
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