Numerical improvement of thin tubes hydroforming with respect to ductile damage

Fully coupled constitutive equations, formulated in the framework of the thermodynamics of irreversible processes with state variables, accounting for isotropic hardening as well as the isotropic ductile damage are used to simulate numerically, by the finite element analysis, 3D metal hydroforming p...

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Bibliographic Details
Published in:International journal of mechanical sciences 2002-12, Vol.44 (12), p.2427-2446
Main Authors: Cherouat, A., Saanouni, K., Hammi, Y.
Format: Article
Language:English
Subjects:
Applied sciences
Computational techniques
Ductile damage
Dynamic explicit scheme
Engineering Sciences
Exact sciences and technology
FEM
Finite elastoplasticity
Finite-element and galerkin methods
Forming
Fracture mechanics (crack, fatigue, damage...)
Fracture mechanics, fatigue and cracks
Fundamental areas of phenomenology (including applications)
Hydroforming processes
Implicit local integration scheme
Inelasticity (thermoplasticity, viscoplasticity...)
Mathematical methods in physics
Mechanics
Mechanics of materials
Metals. Metallurgy
Other forming methods
Physics
Production techniques
Solid mechanics
Structural and continuum mechanics
Viscoelasticity, plasticity, viscoplasticity
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Summary:Fully coupled constitutive equations, formulated in the framework of the thermodynamics of irreversible processes with state variables, accounting for isotropic hardening as well as the isotropic ductile damage are used to simulate numerically, by the finite element analysis, 3D metal hydroforming processes with damage occurence. An implicit integration scheme for local time integration of the constitutive equations and a dynamic explicit resolution scheme to solve the associated dynamic equilibrium problem are used. The effects of friction coefficient, material ductility and hydro bulging condition, on the hydroformability of various thin tubes are discussed.
ISSN:0020-7403
1879-2162
DOI:10.1016/S0020-7403(02)00177-7