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International Journal of Forming Processes
1292-7775
Publication suspended
 

 ARTICLE VOL 4/3-4 - 2001  - pp.377-393  - doi:10.3166/ijfp.4.377-393
TITLE
Hydroforming Processes for Tubular Parts
Optimisation by Means of Adaptive and Iterative FEM Simulation

ABSTRACT

In this article, some strategies are examined concerning the optimisation of hydro-mechanical forming processes for tubular metal parts. The adopted approach consists in using a finite-element model in which a feedback procedure is incorporated that optimises the loading path (i.e., punch displacements and fluid pressure) with regard to the resulting product. In the adaptive method, control parameters are adjusted during process simulation for each subsequent time increment, depending on the outcome of the previous one. The iterative method, on the other hand, is based on the minimisation of an objective function, entailing repeated simulations of the whole process with modified control parameters. These methods are used to assess the preferred settings for some typical test cases. Simulations clearly illustrate the influence of the loading path on the obtained product. The adaptive algorithm explores the wrinkling limit only, but is quick and flexible. The iterative algorithm optimises the quality of the product in a more general sense, but needs extension beyond its present form.

AUTEUR(S)
Wim H. SILLEKENS, Robert J. WERKHOVEN

Reçu le 24 août 2001.    Accepté le 7 novembre 2001.

KEYWORDS
Metal working, hydroforming, tube, process optimisation, finite-element method.

CITATIONS
ijfp.revuesonline.com/revues/5/citation/163.html

LANGUE DE L'ARTICLE
Anglais

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