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

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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 behaviour 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 localised 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.

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          A reformulation of strain gradient plasticity

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            Gradient elasticity in statics and dynamics: An overview of formulations, length scale identification procedures, finite element implementations and new results

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              Experimental microelasticity of two porous solids

              R.S. Lakes (1986)
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                Author and article information

                Journal
                21 November 2013
                2014-04-10
                Article
                1311.5329
                7814ca4d-0841-4b56-898b-b557320fbc9a

                http://creativecommons.org/licenses/publicdomain/

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                Custom metadata
                37 pages, 13 figures
                math-ph math.MP

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