The Influence of Friction on Forming Accuracy of Tubular Parts by Hydroforming with Radial Crushing

摘要：

Forming accuracy is one of the important indicators to evaluate the forming quality of a tubular part by tube hydroforming. However, shape asymmetry on crosssection of tubular part produced by hydroforming with radial crushing (THFRC) inevitably appears due to the friction between the die and the part. In this paper, a circular tube is formed into a square cross-section one by THFRC under the various loading paths and the influence of friction on the forming accuracy of cross-section of the bulged parts is analyzed by using numerical simulation. The results show that the larger the tube is expended to, the lower the forming accuracy is under the identical coefficients of friction (COF); the larger the COF value is, the lower the forming accuracy is under a constant maximum hydraulic pressure. In a word, a reasonable loading path and a low COF value can observably improve the forming accuracy of the bulged tube.

关键词： Tube hydroforming Radial crushing Friction Shape deviation

作者: Lian Fa Yang Pan Lei Chen Guo

作者单位: School of Mechanical & Electrical Engineering, Guilin University of Electronic Technology, Guilin,54 School of Mechanical Engineering, Xian Jiaotong University, Xian 710049, China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1386-1390

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）