Investigation on the Effect of Pulsating Pressure on Tube-Hydroforming Process

被引:1
|
作者
Khalili, Khalil [1 ]
Brooghani, Seyed Yousef Ahmadi [2 ]
Ashrafi, Amir [2 ]
机构
[1] Islamic Azad Univ, Branch Birjand, Mech Engn Grp, Tehran, Iran
[2] Birjand Univ, Fac Engn, Dept Mech Engn, Birjand, Iran
来源
SHEET METAL 2011 | 2011年 / 473卷
关键词
Tube hydroforming; pulsating pressure hydroforming; wall thickness; protrusion height; SIMULATION;
D O I
10.4028/www.scientific.net/KEM.473.618
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Tube hydroforming process is one of the metal forming processes which uses internal pressure and axial feeding simultaneously to form a tube into the die cavity shape. This process has some advantages such as weight reduction, more strength and better integration of produced parts. In this study, T-shape tube hydroforming was analyzed by experimental and finite element methods. In Experimental method the pulsating pressure technique without counterpunch was used; so that the internal pressure was increased up to a maximum, the axial feeding was then stopped. Consequently, the pressure decreased to a minimum. The sequence was repeated until the part formed to its final shape. The finite element model was also established to compare the experimental results with the FE model. It is shown that the pulsating pressure improves the process in terms of maximum protrusion height obtained. Counterpunch was eliminated as being unnecessary. The results of simulation including thickness distribution and protrusion height were compared to the part produced experimentally. The result of modeling is in good agreement with the experiment. The paper describes the methodology and gives the results of both experiment and modeling.
引用
收藏
页码:618 / +
页数:2
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