[en] This paper is concerned with the numerical simulation of hot metal forming, especially superplastic forming. A complete thermo-viscoplastic formulation at finite strains is derived and a unified stress update algorithms for thermo-elastoplastic and thermo-elastoviscoplastic constitutive equations is obtained. The resulting unified implicit algorithm is both efficient and very inexpensive. Finally, numerical simulations of superplastic forming are exposed.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others Mechanical engineering
Author, co-author :
Adam, Laurent
Ponthot, Jean-Philippe ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
A coupled thermo-viscoplastic formulation at finite strains for the numerical simulation of superplastic forming
Publication date :
2001
Event name :
International Conference on Superplasticity in Advanced Materials(OCSAM-200)
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