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

Morini, Lorenzo and Piccolroaz, Amdrea and Mishuris, Gennady 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. ISSN 0020-7683 (2014)

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Abstract

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
Identification Number: https://doi.org/10.1016/j.ijsolstr.2014.05.005
Uncontrolled Keywords: Couple stress elasticity; Energy release rate; Couple stress surface waves; Shielding effects; Weakening effects
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Research Area: Computer Science and Applications
Depositing User: Caterina Tangheroni
Date Deposited: 11 Mar 2016 12:26
Last Modified: 06 Apr 2016 09:07
URI: http://eprints.imtlucca.it/id/eprint/3217

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