Paper Title:
Investigation on the Formability of a Tube in Pulsating Hydroforming
  Abstract

Based on the finite element simulation of tube-hydroforming process with pulsating internal pressure, the influence of the pressure increment p and the time increment t of the pulsating pressure upon the formability of a tube have been investigated by analyzing and comparing the four formability indicators such as thickness distribution, die-filling ability, wall thickness uniformity and potential fracturing. A new indicator f is proposed to estimate the formability of a tube on the basis of the finite element analysis (FEA). The results show that: the indicator f can reasonably reflect the combination formability of a tube in hydroforming including the die-filling ability, the wall-thickness uniformity and the deformation reliability; the p and t values have different influence on the four formability indicators as mentioned above; the smaller the p and t values or the more the internal pressure pulsates during the forming process, the better the combination formability of the tube would be.

  Info
Periodical
Materials Science Forum (Volumes 628-629)
Edited by
Dongming Guo, Jun Wang, Zhenyuan Jia, Renke Kang, Hang Gao, and Xuyue Wang
Pages
617-622
DOI
10.4028/www.scientific.net/MSF.628-629.617
Citation
L. F. Yang, F. J. Chen, "Investigation on the Formability of a Tube in Pulsating Hydroforming", Materials Science Forum, Vols. 628-629, pp. 617-622, 2009
Online since
August 2009
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Price
$32.00
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