Micromechanical investigation of the influence of defects in high cycle fatigue
Source abstract
Abstract
This study aims to analyse the influence of geometrical defects (notches and holes) on the high cycle fatigue behaviour of an electrolytic copper based on finite element simulations of 2D polycrystalline aggregates. In order to investigate the role of each source of anisotropy on the mechanical response at the grain scale, three different material constitutive models are assigned successively to the grains: isotropic elasticity, cubic elasticity and crystal plasticity in addition to the cubic elasticity. The significant influence of the elastic anisotropy on the mechanical response of the grains is highlighted. When considering smooth microstructures, the crystal plasticity have has a slight effect in comparison with the cubic elasticity influence. However, in the case of notched microstructures, it has been shown that the influence of the plasticity is no more negligible. Finally, the predictions of three fatigue criteria are analysed. Their ability to predict the defect size effect on the fatigue strength is evaluated thanks to a comparison with experimental data from the literature.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Microstructure and mechanical properties · Numerical methods in engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Notch size effect in fatigue10.1111/j.1460-2695.1989.tb00525.x ↗
2. A simplified approach to apply the theory of critical distances to notched components under torsional fatigue loading10.1016/j.ijfatigue.2005.07.035 ↗
3. The fatigue strength of steels containing small holes under out-of-phase combined loading10.1016/j.ijfatigue.2005.05.013 ↗
4. Polycrystal orientation distribution effects on microslip in high cycle fatigue10.1016/S0142-1123(02)00057-9 ↗
5. Investigation of the effect of grain clusters on fatigue crack initiation in polycrystals10.1016/j.ijfatigue.2010.04.003 ↗
6. Cubic elasticity and stress distribution at the free surface of polycrystals10.1016/j.actamat.2006.09.035 ↗
7. Micro-mechanical modelling of high cycle fatigue behaviour of metals under multiaxial loads10.1016/j.mechmat.2012.08.006 ↗
8. Micromechanical study of the loading path effect in high cycle fatigue10.1016/j.ijfatigue.2013.09.014 ↗
9. The role of elastic anisotropy, length scale and crystallographic slip in fatigue crack nucleation10.1016/j.jmps.2013.01.001 ↗
10. Finite element simulation of surface deformation of polycrystal with a rough surface under repeated load10.1016/j.finel.2012.05.007 ↗
11. Polycrystal modelling of fatigue: pre-hardening and surface roughness effects on damage initiation for 304L stainless steel10.1016/j.ijfatigue.2012.06.014 ↗
12. Probabilistic framework for a microstructure-sensitive fatigue notch factor10.1016/j.ijfatigue.2010.02.003 ↗
13. F.E. calculations of copper bicrystal specimens submitted to tension-compression tests10.1016/0956-7151(94)90287-9 ↗
14. Franciosi P. Etude théorique et expérimentale du comportement élastoplastique des monocristaux métalliques se déformant par glissement: modélisation pour un chargement complexe quasi statique. Ph.D. thesis, Université Paris Nord – Paris 13; 1984.
15. Gérard C. Mesures de champs et identification de modèles de plasticité cristalline. Ph.D. thesis, Université Paris 13; 2008.
16. A multiscale approach of fatigue and shakedown for notched structures10.1016/j.tafmec.2007.05.002 ↗
17. Gmsh: a 3-d finite element mesh generator with built-in pre-and post-processing facilities10.1002/nme.2579 ↗
18. Evaluation of finite element based analysis of 3D multicrystalline aggregates plasticity: application to crystal plasticity model identification and the study of stress and strain fields near grain boundaries10.1016/j.ijplas.2004.05.017 ↗
19. Object-oriented programming applied to the finite element method. Part II. Application to material behaviors10.1080/12506559.1998.10511322 ↗
20. Dang-Van K. Macro-micro approach in high-cycle multiaxial fatigue. In: ASTM special technical publication; 1993. p. 120–30.10.1520/STP24799S ↗
21. A new criterion of fatigue strength for out-of-phase bending and torsion of hard metals10.1016/0142-1123(94)90449-9 ↗
22. Plasticity and damage heterogeneity in fatigue10.1016/j.tafmec.2007.10.006 ↗
23. Efficiency of algorithms for shear stress amplitude calculation in critical plane class fatigue criteria10.1016/j.commatsci.2005.01.005 ↗
24. On the statistical interpretation of fatigue tests10.1098/rspa.1953.0024 ↗
25. Polycrystalline numerical simulation of variable amplitude loading effects on cyclic plasticity and microcrack initiation in austenitic steel 304l10.1016/j.ijfatigue.2011.07.003 ↗
26. Simulated microstructure-sensitive extreme value probabilities for high cycle fatigue of duplex ti6al4v10.1016/j.ijplas.2011.01.006 ↗
27. Effects of an artificial small defect on torsional fatigue strength of steels10.1115/1.3225951 ↗
28. Multiaxial fatigue limit for defective materials: mechanisms and experiments10.1016/j.actamat.2004.05.006 ↗
29. The multiaxial fatigue strength of specimens containing small defects10.1016/S1566-1369(03)80014-6 ↗