The University of Southampton
University of Southampton Institutional Repository

Analytical and finite element modelling of roughness induced crack closure

Kamp, N., Parry, M.R., Singh, K.D. and Sinclair, I. (2004) Analytical and finite element modelling of roughness induced crack closure Acta Materialia, 52, (2), pp. 343-353. (doi:10.1016/j.actamat.2003.09.019).

Record type: Article


Crack closure is an established component of fatigue understanding, however, significant confusion remains in both experimental determination and micromechanical modelling. Analytical and finite element models of roughness induced crack closure (RICC) are developed in the present paper. A novel interpretation of RICC is explored where shear strains causing asperity contact arise explicitly from residual plastic deformation in the wake of a propagating crack, in a manner that is essentially analogous to plasticity induced crack closure (PICC). The analytical model estimates the crack opening along a simple deflected crack path, defined by a crack deflection angle and length, and residual shear at each asperity interfering with this opening to generate closure. The results from the analytical model are compared to finite element modelling and experimental results, with insight being provided into a controlling influence of the ratio of asperity size to plastic zone size on closure levels.

Full text not available from this repository.

More information

Published date: January 2004
Additional Information: Novel interpretation of roughness induced fatigue crack closure, investigated in a variety of modelling approaches. To the authors knowledge, the first explanation of roughness induced closure with a physically realistic interpretation of shear offsets in the crack wake, providing unification with plasticity induced crack closure. Novelty in concept and approach, providing new theoretical insight, which is then distilled into a simple analytical framework.
Keywords: crack closure, modelling, finite element, roughness
Organisations: Engineering Mats & Surface Engineerg Gp


Local EPrints ID: 22637
ISSN: 1359-6454
PURE UUID: f55c67af-763e-4b6e-9a92-1527dd62cf05

Catalogue record

Date deposited: 21 Mar 2006
Last modified: 17 Jul 2017 16:21

Export record


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.