Multiaxial fatigue limit criterion for defective materials

The objective of this paper is to quantify the influence of defect on the fatigue limit. Elastic–plastic simulations are conducted to determine the stress distribution around defects for different geometries and different loading. It is shown that a relevant mechanical parameter governing the fatigu...

Full description

Saved in:
Bibliographic Details
Published in:Engineering fracture mechanics 2006, Vol.73 (1), p.112-133
Main Authors: Nadot, Y., Billaudeau, T.
Format: Article
Language:English
Subjects:
Applied sciences
Artificial defect
Casting defect
Exact sciences and technology
Fatigue limit
Foundry engineering
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Gradient effect
Inelasticity (thermoplasticity, viscoplasticity...)
Metals. Metallurgy
Multiaxial criterion
Other casting methods. Solidification
Physics
Production techniques
Solid mechanics
Structural and continuum mechanics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The objective of this paper is to quantify the influence of defect on the fatigue limit. Elastic–plastic simulations are conducted to determine the stress distribution around defects for different geometries and different loading. It is shown that a relevant mechanical parameter governing the fatigue limit for defect material could be the gradient of the hydrostatic stress. A multiaxial fatigue criterion is identified with three parameters and validated for different metallic materials under multiaxial conditions. Results are good and show that the gradient of the hydrostatic stress is a good parameter to characterise the influence of a defect on the fatigue behaviour.
ISSN:0013-7944
1873-7315
DOI:10.1016/j.engfracmech.2005.06.005