Perturbation of mode III interfacial cracks

Andrea Piccolroaz, Alexander Movchan, Gennady Mishuris

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

13 Dyfyniadau(SciVal)

Crynodeb

We consider the perturbation problem of a Mode III interfacial crack. The perturbation is of geometrical type and can be both perturbation of the crack faces and perturbation of the interface, which can deviate from the initial straight line configuration. Asymptotic formulae are derived for the first-order perturbation of the stress intensity factor. It is shown that, due to the unsymmetrical nature of the problem, the Mode III skew-symmetric weight function derived in Piccolroaz et al. (J Mech Phys Solids 57:1657-1682, 2009) is essential for the derivation of the correct asymptotic formulae. To illustrate the method, we present the numerical results for different geometrical perturbations of a half-plane interfacial crack in an infinite bimaterial structure. Discussion on the extension of the method to finite bodies is also presented.
Iaith wreiddiolSaesneg
Tudalennau (o-i)1-2
Nifer y tudalennau2
CyfnodolynInternational Journal of Fracture
Cyfrol166
Rhif cyhoeddi1-2
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 06 Medi 2011

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