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Remarks on the energy release rate for an antiplane moving crack in couple stress elasticity

Morini, L. ORCID:, Piccolroaz, A. and Mishuris, G. 2014. Remarks on the energy release rate for an antiplane moving crack in couple stress elasticity. International Journal of Solids and Structures 51 (18) , pp. 3087-3100. 10.1016/j.ijsolstr.2014.05.005

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This paper is concerned with the steady-state propagation of an antiplane semi-infinite crack in couple stress elastic materials. A distributed loading applied at the crack faces and moving with the same velocity of the crack tip is considered, and the influence of the loading profile variations and microstructural effects on the dynamic energy release rate is investigated. The behavior of both energy release rate and maximum total shear stress when the crack tip speed approaches the critical speed (either that of the shear waves or that of the localized surface waves) is studied. The limit case corresponding to vanishing characteristic scale lengths is addressed both numerically and analytically by means of a comparison with classical elasticity results.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Couple stress elasticity; Energy release rate; Couple stress surface waves; Shielding effects; Weakening effects
Publisher: Elsevier
ISSN: 0020-7683
Last Modified: 21 Oct 2022 06:54

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