The paper deals with the testing and modelling of metals response when subjected to sheet
forming operations. The focus is both on the modelling of hardening behaviour and yield …

A fourth order polynomial yield criterion (Poly4) and a non-quadratic yield function are
coupled under associated flow rule to describe the evolution of anisotropic yielding behavior …

A simple analytical form for yield surface distortion under non-associated flow rule is
developed from the expression of the transformed second and third deviatoric stress …

This study proposes a machine learning-based constitutive model for anisotropic plasticity in
sheet metals. A fully connected deep neural network (DNN) is constructed to learn the stress …

For the finite element analysis of anisotropic sheet metals forming, the Hill48 function was
developed into an anisotropic constitutive model based on the non-associated flow rule …

Abstract Convexity of a yield function must be guaranteed to ensure unique relationship
between plastic strain increments and stress components. A geometry-inspired numerical …

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

Trained machine learning (ML) algorithms can serve as numerically efficient surrogate
models of sophisticated but numerically expensive constitutive models of material behavior …

The mechanical behavior in cross biaxial tension was investigated for two metallic sheets,
an aluminium alloy and a dual phase steel. The heterogeneous strain field in the central …

The springback of a sheet metal part is the change of its shape after removing a forming tool.
An accurate prediction of springback is very difficult because sheet metal undergoes a …