A continuum damage mechanics model with the strain-based approach to biaxial low cycle fatigue failure

Citation
A. Zolochevsky et al., A continuum damage mechanics model with the strain-based approach to biaxial low cycle fatigue failure, FORSC INGEN, 66(2), 2000, pp. 67-73
Citations number
35
Categorie Soggetti
Mechanical Engineering
Journal title
FORSCHUNG IM INGENIEURWESEN-ENGINEERING RESEARCH
ISSN journal
00157899 → ACNP
Volume
66
Issue
2
Year of publication
2000
Pages
67 - 73
Database
ISI
SICI code
0015-7899(200009)66:2<67:ACDMMW>2.0.ZU;2-8
Abstract
A continuum damage mechanics model for low cycle fatigue failure of initial ly isotropic materials under biaxial loading conditions is presented. The e xpression for the equivalent strain in the fatigue damage evolution equatio n contains the three material parameters, and the strain intensity as well as the maximum principal strain and the volume strain for amplitudes. It is shown how these material parameters can be determined from a series of bas ic experiments using a cruciform specimen. Particular expressions for the e quivalent strain with a smaller number of material parameters and invariant s are obtained. Model predictions are found to be in satisfactory agreement with the experimental low cycle fatigue data under full ranged biaxial loa dings obtained in the test using a cruciform specimen.