Journal ArticleDOI
Application of a Thermo-Viscoplastic Model to the Analysis of Defects in Warm Forming Conditions
Jean-Claude Gelin,A. Moisan +1 more
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In this paper, an implicit-explicit integration method for analyzing the quasi-static deformations of solids, in the elastic-viscoplastic range, including damage and temperature effects, is presented.About:
This article is published in CIRP Annals.The article was published on 1986-01-01. It has received 12 citations till now. The article focuses on the topics: Viscoplasticity & Deformation (engineering).read more
Citations
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Journal ArticleDOI
Modelling of the Mannesmann effect
TL;DR: In this paper, a new model of the Mannesmann effect is presented, based on a novel damage law that takes into account the effects of pre-existing defects in the working material.
Journal ArticleDOI
An investigation of a coupled analysis of a thermo-elastic-plastic model during warm upsetting
Zone-Ching Lin,S.Y. Lin +1 more
TL;DR: In this paper, the authors constructed a thermo-elastic-plastic model which can be used in the simulation of a more realistic metal forming process under a warm forming condition.
Journal ArticleDOI
Modelling of damage in metal forming processes
TL;DR: In this paper, the authors compare damage models or plastic instability ones that can be used to overcome the problem in metal forming processes and compare results for damage predictions obtained from finite element modelling of bulk or sheet metal forming process.
Journal ArticleDOI
A linked FEM-damage percolation model of aluminum alloy sheet forming
TL;DR: In this article, a damage percolation code is linked with LS-DYNA, an explicit dynamic FEM code used to introduce local strain gradients and compliance effects due to damage-induced softening.
Book ChapterDOI
Theoretical and numerical modelling of isotropic and anisotropic ductile damage in metal forming processes
TL;DR: In this article, a review of some models and methods is presented, applicable both in quasi-static as well as in transient dynamic situations, for cold or hot forming conditions, and numerical modelling of damage development in some industrial forming processes illustrates the possibilities of the proposed approach.
References
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Journal ArticleDOI
Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I—Yield Criteria and Flow Rules for Porous Ductile Media
Journal ArticleDOI
Void Nucleation Effects in Biaxially Stretched Sheets
C. C. Chu,Alan Needleman +1 more
TL;DR: In this article, the effects of void nucleation occurring during the deformation history on forming limit curves are considered for both in-plane and punch stretching employing a constitutive model of a porous plastic solid.
Journal ArticleDOI
A tangent modulus method for rate dependent solids
TL;DR: In this article, a one step forward gradient time integration scheme is developed which leads to a tangent stiffness type method for rate dependent solids, and numerical examples are presented showing application of the method to material behaviors ranging from elastic nonlinearly viscous to nearly rate independent.
Journal ArticleDOI
Constitutive Equations for the Rate-Dependent Deformation of Metals at Elevated Temperatures
Journal ArticleDOI
Some computational aspects of large deformation, rate-dependent plasticity problems
L.M. Taylor,Eric B. Becker +1 more
TL;DR: In this paper, the governing equations for a finite element formulation of boundary value problems for large deformation metal forming processes are derived using a principle of virtual work formulated in a Lagrangian reference system.