Thermomechanical stress analysis of superplastic forming tool

Cy Gao (1) , Philippe Lours (1) , Gérard Bernhart (1)

1 CROMeP - Centre de Recherche Outillages, Matériaux et Procédés

A thermomechanical stress analysis of a superplastic forming (SPF) tool is performed by means of the finite element simulation of the whole forming process. The distributions of residual stress and distortion within the tool are investigated in order to evaluate the damage C effects of thermomechanical loading. The effect of cyclic loading is related to the fact that residual stress and distortion in the tool accumulate as loading cycles proceed. The characteristics of the typical forming parameters of the sheet are described too. Meanwhile, the numerical simulation can be employed to compare various materials that can be used to manufacture forming tools.

Keywords: Superplastic forming process; Forming tools; Finite element simulation; Thermomechanical analysis

Domains: Engineering Sciences [physics]

Cy Gao, Philippe Lours, Gérard Bernhart. Thermomechanical stress analysis of superplastic forming tool. Journal of Materials Processing Technology, 2005, 169 (2), pp.281-291. ⟨10.1016/j.jmatprotec.2005.03.029⟩. ⟨hal-01716113⟩