Effect of strain path change on limits to ductility of anisotropic metal sheets

M Kuroda, V Tvergaard - International Journal of Mechanical Sciences, 2000 - Elsevier
Localized necking in thin metal sheets is analyzed by using the M–K-model approach, and
the effect of a number of different non-proportional strain paths prior to the occurrence flow …

Limits to ductility set by plastic flow localization

A Needleman, JR Rice - Mechanics of Sheet Metal Forming: Material …, 1978 - Springer
The theory of strain localization is reviewed with reference both to local necking in sheet
metal forming processes and to more general three dimensional shear band localizations …

Forming limit diagrams for anisotropic metal sheets with different yield criteria

M Kuroda, V Tvergaard - International journal of solids and structures, 2000 - Elsevier
For thin metal sheets subject to stretching under various in-plane tensile stress histories,
localized necking is analyzed by using the M–K-model approach, and forming limit diagrams …

Modeling the localized necking in anisotropic sheet metals

L Zhang, J Wang - International Journal of Plasticity, 2012 - Elsevier
Localized necking is one of the most frequently observed failure mechanisms in sheet
forming processes. The forming limit diagram (FLD) characterizes the sheet metal …

Numerical analysis of diffuse and localized necking in orthotropic sheet metals

H Aretz - International Journal of Plasticity, 2007 - Elsevier
In the present paper the diffuse and localized necking models according to Swift [Swift, HW,
1952. Plastic instability under plane stress, Journal of the Mechanics and Physics of Solids …

Analysis of plastic flow localization under strain paths changes and its coupling with finite element simulation in sheet metal forming

AB da Rocha, AD Santos, P Teixeira… - Journal of Materials …, 2009 - Elsevier
Formability of sheet metal is usually assessed by the useful concept of forming limit
diagrams (FLD) and forming limit curves (FLC) represent a first safety criterion for deep …

Prediction of limit strain in sheet metal-forming processes by 3D analysis of localized necking

K Ito, K Satoh, M Goya, T Yoshida - International journal of mechanical …, 2000 - Elsevier
Theoretical prediction of forming limit strain of sheet metal is developed in the framework of
the three-dimensional general bifurcation theory. The onset of the three-dimensional …

Effect of kinematic hardening on localized necking in biaxially stretched sheets

V Tvergaard - International Journal of Mechanical Sciences, 1978 - Elsevier
For elastic-plastic sheets under biaxial stretching localized necking is investigated assuming
that the material follows a kinematic hardening rule. The investigation is mainly based on the …

A simple isotropic-distortional hardening model and its application in elastic–plastic analysis of localized necking in orthotropic sheet metals

H Aretz - International Journal of Plasticity, 2008 - Elsevier
In the present work an elastic–plastic constitutive model including mixed isotropic-
distortional hardening is presented. The approach is very simple and requires only …

[HTML][HTML] Comparison of bifurcation and imperfection analyses of localized necking in rate-independent polycrystalline sheets

K Yoshida, M Kuroda - International Journal of Solids and Structures, 2012 - Elsevier
Plastic flow localization into a narrow band is investigated for a rate-independent
polycrystalline sheet. Strain localization is considered to initiate at a point of bifurcation from …