A coupled stress-triaxiality-dependent damage viscoplasticity model on crack initiation and propagation in high-strength rail steel

F Yu, MT Hendry, PYB Jar, S Li, Z Li - Theoretical and Applied Fracture …, 2020 - Elsevier
In this paper, a continuum damage enhanced formulation of effective (undamaged) material
properties is proposed to predict fracture behaviour of various notched tensile specimens …

Ductile fracture of hydrostatic‐stress‐insensitive metals using a coupled damage‐plasticity model

HM Wang, T Shen, F Yu… - Fatigue & fracture of …, 2021 - Wiley Online Library
In this paper, a new coupled damage‐plasticity model is proposed to predict plastic
response and ductile fracture for two hydrostatic‐stress‐insensitive metals. A convenient …

A stress triaxiality-dependent viscoplastic damage model to analyze ductile fracture under axisymmetric tensile loading

F Yu, MT Hendry, SX Li - Engineering Fracture Mechanics, 2019 - Elsevier
The aim of this paper is to gain insight for the transition of fracture initiation sites in notched
tensile specimens. For this purpose, a stress triaxiality-dependent viscoplastic damage …

Plasticity damage self-consistent model incorporating stress triaxiality and shear controlled fracture mechanisms–model formulation

N Bonora, G Testa - Engineering Fracture Mechanics, 2022 - Elsevier
A model for plasticity and damage, developed in the context of continuum damage
mechanics and consistent with micromechanisms of void nucleation, growth, and …

Application of a stress triaxiality dependent fracture criterion in the finite element analysis of unnotched Charpy specimens

HL Yu, DY Jeong - Theoretical and Applied Fracture Mechanics, 2010 - Elsevier
Nonlinear dynamic finite element analysis (FEA) is conducted to simulate the fracture of
unnotched Charpy specimens of steel under pendulum impact loading by a dedicated …

Damage mechanics incorporating two back stress kinematic hardening constitutive models

S Yun, A Palazotto - Engineering Fracture Mechanics, 2007 - Elsevier
In the present work, damage mechanics is incorporated into the plastic constitutive relation
in order to describe the localized plastic deformation and damage experienced in a tensile …

An improved damage evolution law based on continuum damage mechanics and its dependence on both stress triaxiality and the third invariant

L Malcher, EN Mamiya - International Journal of Plasticity, 2014 - Elsevier
In this contribution, it is suggested a damage evolution law which is based on Continuum
Damage Mechanics (CDM) and dependent on the hydrostatic pressure, by the stress …

A stress-invariant based multi-parameters ductile progressive fracture model

YJ Liu, Q Sun, XL Fan, T Suo - Materials Science and Engineering: A, 2013 - Elsevier
Based on continuum damage mechanics and stress invariants, a novel multi-parameters
ductile fracture model is proposed by coupling the synergistic effects of hydrostatic pressure …

Computational Mechanics Based Validation of Crack Growth Approaches for Fracture Specimen Predictions

S Kalyanam, L Hill, G Wilkowski… - Pressure Vessels …, 2022 - asmedigitalcollection.asme.org
The last several decades have seen growth in elastic-plastic fracture mechanics and the
modeling of the behavior of structural steels employed in the nuclear, oil and gas, and other …

A gradient-enhanced damage model motivated by engineering approaches to ductile failure of steels

A Seupel, M Kuna - International Journal of Damage …, 2019 - journals.sagepub.com
Material models for ductile damage, crack initiation, and crack growth are of high interest, eg
for metal forming simulations. Empirical engineering approaches are often applied, but the …