Numerical Analysis of Damage Evolution in Ductile Solids

The continuum mechanical simulation of microstructural damage process is important in the study of ductile fracture mechanics. An essential feature in these analyses, is the strong influence of stress triaxiality ratio, i.e. the ratio of mean stress to equivalent stress, on the rate of damage growth...

Full description

Saved in:
Bibliographic Details
Published in:Structural durability & health monitoring 2005-01, Vol.1 (1), p.67
Main Authors: Mashayekhi, M, Ziaei-Rad, S, Parvizian, J, Nikbin, K, Hadavinia, H
Format: Article
Language:English
Subjects:
Algorithms
Axial stress
Computer simulation
Constitutive models
Crack initiation
Damage assessment
Ductile fracture
Evolution
Finite element method
Fracture mechanics
Mathematical analysis
Mathematical models
Numerical analysis
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The continuum mechanical simulation of microstructural damage process is important in the study of ductile fracture mechanics. An essential feature in these analyses, is the strong influence of stress triaxiality ratio, i.e. the ratio of mean stress to equivalent stress, on the rate of damage growth. In this paper, finite element simulation of damage evolution and fracture initiation in ductile solids will be investigated. A fully coupled constitutive elastic-plastic-damage model has been implemented. The stress update algorithm for the constitutive model is presented together with the consistent tangent operator, which is needed for implicit FEA. Simulations are performed and the results are compared with the numerical and experimental ones in the literature and good agreements were found between them.
ISSN:1930-2983
1930-2991
DOI:10.3970/sdhm.2005.001.067