Models and modelling for process limits in metal forming

W Volk, P Groche, A Brosius, A Ghiotti, BL Kinsey… - CIRP Annals, 2019 - Elsevier
Modelling of metal forming processes is an essential task of production engineering. Due to
the latest technological developments, a huge variety of models is already available and …

[HTML][HTML] An evolving non-associated Hill48 plasticity model accounting for anisotropic hardening and r-value evolution and its application to forming limit prediction

J Lian, F Shen, X Jia, DC Ahn, DC Chae… - International Journal of …, 2018 - Elsevier
Experimental and numerical investigations on the characterisation and prediction of cold
formability of a ferritic steel sheet were performed in this study. Tensile tests and Nakajima …

A Review of Sheet Metal Forming Evaluation of Advanced High-Strength Steels (AHSS)

R Pereira, N Peixinho, SL Costa - Metals, 2024 - mdpi.com
This paper presents a review on the formability evaluation of AHSS, enhancing necking-
based failure criteria limitations. Complementary fracture/damage constitutive modeling …

A theoretical prediction framework for the construction of a fracture forming limit curve accounting for fracture pattern transition

L Mu, Z Jia, Z Ma, F Shen, Y Sun, Y Zang - International Journal of Plasticity, 2020 - Elsevier
It has been accepted that the formability of a sheet metal with a moderate ductility can be
limited by not only localized necking (LN), but also ductile fracture (DF). In this study, a …

A new approach for fracture prediction considering general anisotropy of metal sheets

N Park, TB Stoughton, JW Yoon - International journal of plasticity, 2020 - Elsevier
One of the most challenging issues in the automotive industry is to reliably predict the
fracture limits across a broad range of the deformation modes subjected to various forming …

Neural network model predicting forming limits for Bi-linear strain paths

C Bonatti, D Mohr - International Journal of Plasticity, 2021 - Elsevier
Abstract The Forming Limit Curve (FLC) describes the maximum in-plane strains that can be
applied to sheet metal before necking initiates. It is well known that the FLC depends on the …

[HTML][HTML] Extension of a shear-controlled ductile fracture criterion by considering the necking coalescence of voids

Z Zhang, Y Wu, F Huang - International Journal of Solids and Structures, 2022 - Elsevier
An isotropic ductile fracture criterion considering nucleation, growth, shear coalescence and
necking coalescence of voids during plastic deformation is developed to model fracture …

Ductile fracture of anisotropic QP980 steel sheet by using the isotropic/anisotropic modified Mohr-Coulomb models

E Dai, Z Lv, P Yuan, G Liu, N Guo, Z Liu… - Engineering Fracture …, 2023 - Elsevier
Abstract The modified isotropic Mohr-Coulomb (iso-MMC) fracture model, which utilizes the
Mises yield function and isotropic hardening law, was calibrated through tensile tests on …

A comparative investigation into the influence of the constitutive model on the prediction of in-plane formability for Nakazima and Marciniak tests

J Noder, C Butcher - International Journal of Mechanical Sciences, 2019 - Elsevier
The present study investigates the use of both Marciniak and Nakazima tests to generate the
forming limit curves (FLCs) for a power-law hardening dual phase steel, DP980, and an …

An extended MK model under surface traction with adjustable gradient distribution

L Ma, L Zheng, Z Wang - International Journal of Plasticity, 2023 - Elsevier
The forming limit of sheets usually corresponds to the strain accumulation before localized
necking and is closely related to the loading state. In the viscous pressure forming (VPF) …