Models and modelling for process limits in metal forming
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 …
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
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 …
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 …
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
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 …
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
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 …
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
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 …
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 …
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 …
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
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 …
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) …
necking and is closely related to the loading state. In the viscous pressure forming (VPF) …