A plane stress constitutive relation for rigid-plastic sheets under biaxial stretching is
presented, in which the yield surface expansion models the behaviour of a solid carrying a …

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 …

The forming limits in biaxially stretched sheets are analysed on the basis of a linearized
localization approach carried out within the framework of flow-theory of plasticity. This …

The present contribution deals with the prediction of diffuse necking in the context of forming
and stretching of metal sheets. For this purpose, two approaches are investigated, namely …

Abstract Effects of grain size on the limiting strains attained in biaxial stretching have been
investigated using 70% Cu-30% Zn brass sheets of 1.0 and 0.5 mm thickness with regular …

Localized necking limits useful forming of sheet materials. Several theoretical models predict
limit strains under biaxial stretching conditions. Models that assume infinite-length defects …

A theoretical and numerical analysis of the formation of a localized neck in a biaxially
stretched sheet is presented. A time-independent constitutive law is assumed to be …

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 …

A rational approach to the localized necking problem was given by Storen and Rice [J.
Mech. Phys. Solids 23 (1975) 421] but this approach is limited to the description of …

The role of void growth in triggering local necking in biaxially stretched sheets is
investigated. A recently proposed constitutive equation for porous plastic materials is …