吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (5): 1402-1407.doi: 10.13229/j.cnki.jdxbgxb201505004

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Effects of drawbead corner radius and metal flow direction on drawbead restraining force

NA Jing-xin, BAI Shuang, LIU Hai-peng, YAN Ya-kun   

  1. State Key Laboratory of Automotive Dynamic Simulation, Jilin University, Changchun 130022, China
  • Received:2014-05-15 Online:2015-09-01 Published:2015-09-01

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Abstract: The effects of drawbead corner radius and metal flow direction on drawbead restraining force are studied by experiment testing and regression analysis. Experimental data are acquired respectively by a specially designed experiment device, in which the variable is the corner radius or metal flow direction. An approximate linear relationship exists between the corner radius and drawbead restraining force, while the relationship between the metal flow direction and drawbead restraining force is nearly parabolic. An approximate analytical model of drawbead restraining force is established based on the influence law and regression analysis. Finally, by T test of regression coefficient, it is concluded that the metal flow direction has stronger impact on drawbead restraining force than that of the drawbead corner radius. Besides, the coupling effect of metal flow direction and corner radius is insignificant.

Key words: vehicle engineering, drawbead, corner radius, metal flow direction, drawbead restraining force, regression analysis

CLC Number: 

  • U463
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