This paper reviews the most recent models for description of the anisotropic plastic behavior
and formability of sheet metals. After a brief review of classic isotropic yield functions, recent …

Deformation instability is a macroscopic and microscopic phenomenon of non-uniformity
and unstable deformation of materials under stress loading conditions, and it is affected by …

The present work mainly focuses on the analytical determination of anisotropic parameters
for Poly6 yield criterion, which is mathematically equivalent to Yoshida2013 yield function …

Forming and fracture forming limit diagrams are significant performance indexes for
evaluating the formability of a material. In the present study, experimental and theoretical …

Abstract Forming Limit Diagrams (FLDs) of 0.1 and 1 mm thick ultra-thin ferritic stainless
steel (FSS) sheets are predicted using a combination of the crystal plasticity finite element …

This paper presents a historical perspective on the development of the model that was
initially proposed by Prof. Marciniak in 1965 for calculating the Forming Limit Curves (FLC's) …

Adoption of stress-based forming limit curves (FLC) and their equivalent strain
representations were introduced to overcome the path dependence of the conventional …

To accurately identify the limit strains and improve the prediction accuracy of forming limits
for sheet metal, a novel three-dimensional MK model by integrating GTN model is …

The stress state of the sheet has a significant influence on the formability during the sheet
metal forming process. Some research has shown that the through-thickness shear stress on …

The fracture forming limit curves of ultrathin sheets from pure shear to uniaxial tension were
characterized in this study under uniaxial tension test (UTT) and Nakajima test (NT) …