Machine-learning based temperature-and rate-dependent plasticity model: application to analysis of fracture experiments on DP steel
Slow, intermediate and high strain rate experiments are carried out on flat smooth and
notched tensile specimens extracted from dual phase steel sheets. A split Hopkinson …
notched tensile specimens extracted from dual phase steel sheets. A split Hopkinson …
[HTML][HTML] Neural network based rate-and temperature-dependent Hosford–Coulomb fracture initiation model
The accurate description of the strain rate and temperature dependent response of metals is
a perpetual quest in crashworthiness and forming applications. In the present study …
a perpetual quest in crashworthiness and forming applications. In the present study …
A shear modified enhanced Gurson constitutive relation and implications for localization
IA Khan, AA Benzerga, A Needleman - … of the Mechanics and Physics of …, 2023 - Elsevier
The most widely used phenomenological constitutive relation to model ductile failure of
structural metals at room temperature is based on the work of Gurson (1977) and has the …
structural metals at room temperature is based on the work of Gurson (1977) and has the …
[HTML][HTML] Calibration of the modified Mohr-Coulomb fracture model by use of localization analyses for three tempers of an AA6016 aluminium alloy
This paper presents a novel calibration procedure of the modified Mohr-Coulomb (MMC)
fracture model by use of localization analyses and applies it for three tempers of an AA6016 …
fracture model by use of localization analyses and applies it for three tempers of an AA6016 …
[HTML][HTML] Ductile failure predictions using micromechanically-based computational models
Three different micromechanically-based computational models for fracture in porous ductile
solids are compared and assessed. Model A is a unit cell model of a porous ductile solid …
solids are compared and assessed. Model A is a unit cell model of a porous ductile solid …
Lode-dependent second porosity in porous plasticity for shear-dominated loadings
G Rousselier - International Journal of Plasticity, 2022 - Elsevier
Ductile fracture of metallic alloys in shear-dominated loadings is usually modeled either with
uncoupled failure criteria or with porous plasticity. In the first approach, criteria depending on …
uncoupled failure criteria or with porous plasticity. In the first approach, criteria depending on …
A Lode-dependent Gurson model motivated by unit cell analyses
In this study, the effects of including a dependency on the third deviatoric stress invariant in
the void evolution equation of the Gurson model are examined using unit cell calculations …
the void evolution equation of the Gurson model are examined using unit cell calculations …
Ductile tearing of aluminium plates: experiments and modelling
This paper presents an experimental and numerical study on quasi-static ductile tearing of
thin plates of the aluminium alloy AA6016 in three tempers. Depending on the temper, the …
thin plates of the aluminium alloy AA6016 in three tempers. Depending on the temper, the …
[HTML][HTML] On the effect of plastic anisotropy, strength and work hardening on the tensile ductility of aluminium alloys
The influence of plastic anisotropy, yield strength and work hardening on ductile failure is
studied by nonlinear finite element simulations and strain localization analyses of tensile …
studied by nonlinear finite element simulations and strain localization analyses of tensile …
[HTML][HTML] Aluminium plates with geometrical defects subjected to low-velocity impact: Experiments and simulations
V Espeseth, T Børvik, OS Hopperstad - International Journal of Impact …, 2022 - Elsevier
In this paper, an experimental and numerical program investigating impact in the low-
velocity regime (≤ 10 m/s) on 1.5 mm thick AA6016 aluminium plates in three different heat …
velocity regime (≤ 10 m/s) on 1.5 mm thick AA6016 aluminium plates in three different heat …