Finite element meshes for optimal modelling of plasticity induced crack closure

article

Antunes, F. V.
Camas, D.
Correia, L.
Branco, R.

Elsevier

ANTUNES, F. V. [et al.] (2015) - Finite element meshes for optimal modelling of plasticity induced crack closure. Engineering Fracture Mechanics. ISSN 0013-7944. Vol. 142, p. 184-200. Doi 10.1016/j.engfracmech.2015.06.007

0013-7944

Finite element meshes for optimal modelling of plasticity induced crack closure

Plasticity induced crack closure
Finite element mesh
Crack tip plastic deformation
Reversed plastic deformation

info:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FEME-PME%2F114892%2F2009/PT
info:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FEMS-PRO%2F3148%2F2012/PT
FCOMP-01-0124-FEDER-015171

2017-04-11T16:42:13Z
2017-04-11T16:42:13Z
2015-07

The main goal here is to optimise the finite element mesh used to predict plasticity induced crack closure (PICC). A numerical model was developed for a M(T) specimen made of 6016-T4 aluminium alloy. The parameters studied were the size of most refined region perpendicularly to crack flank (ym) and along propagation direction (xr), the size of finite elements near crack tip (L1) and the vertical size of refinement close to crack flank (yA/B). A maximum size of about 1.3mm was found for ym, but a smaller value has a limited impact on PICC. An analytical expression was proposed for xr, dependent on δK and Kmax. An optimum value seems to exist for L1.
info:eu-repo/semantics/publishedVersion

openAccess
http://creativecommons.org/licenses/by/4.0/

eng