Title :
A Computational Model for the Normal Pressure between the Tube and the Hydroforming Die
Author :
Xu, Xianghe ; Liu, Yonggang ; Yang, Xingliang ; Zhang, Jian ; Zhang, Weigang
Author_Institution :
Tech. Center of Maanshan Iron & Steel Co. Ltd., Maanshan, China
Abstract :
The normal pressure between the tube and the die in the guiding zone has a great effect on the friction force. Therefore, it is an important consideration in the design of tube hydroforming process. In the present study, a mathematical model for calculating the normal pressure between the tube and the die in the guiding zone is proposed. It is shown that the normal pressure is determined by the Poisson´s ratio of the material, the ratio of the outer diameter to the inner diameter and the internal pressure. Simulations and experiments of free forming are performed. The simulation and experimental results show that the mathematical model proposed is very reliable.
Keywords :
Poisson ratio; dies (machine tools); forming processes; friction; mathematical analysis; mechanical engineering computing; pipes; pressure measurement; process design; Poisson ratio; computational model; free forming; friction force; hydroforming die; internal pressure; mathematical model; normal pressure calculation; tube hydroforming process design; Analytical models; Electron tubes; Equations; Force; Materials; Mathematical model; Stress; Free forming; Guiding zone; Hydroforming; Normal pressure;
Conference_Titel :
Information Engineering (ICIE), 2010 WASE International Conference on
Conference_Location :
Beidaihe, Hebei
Print_ISBN :
978-1-4244-7506-3
Electronic_ISBN :
978-1-4244-7507-0
DOI :
10.1109/ICIE.2010.339
