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Finite element analysis of the superplastic forming of thick sheet using the incremental flow formulation
Author(s) -
Bonet J.,
Bhargava P.,
Wood R. D.
Publication year - 1997
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/(sici)1097-0207(19970915)40:17<3205::aid-nme208>3.0.co;2-p
Subject(s) - finite element method , discretization , superplasticity , constitutive equation , notation , flow (mathematics) , forming processes , computer science , completeness (order theory) , calculus (dental) , mathematics , algorithm , engineering drawing , mechanical engineering , engineering , structural engineering , geometry , mathematical analysis , materials science , alloy , metallurgy , medicine , arithmetic , dentistry
The paper discusses the finite element analysis of the superplastic forming of thick sheet components. The incremental formulation proposed is based on a geometrical approximation of the flow type of constitutive equations that describe the behaviour of the alloy during forming. The spatial discretization is achieved using eight‐noded finite elements. An algorithm capable of predicting the correct forming pressure is also presented in a form consistent with the incremental flow formulation. Some experimental validation of these techniques will be shown together with a number of more realistic applications which will illustrate the generality of these techniques and their ability to simulate the forming of complex components. Most of the material in this section is standard but has been included for the purpose of completeness and to introduce the reader to the notation used in the paper. © 1997 John Wiley & Sons, Ltd.