Summary
The dynamic propagation of a finite crack under mode-I loading in a micropolar elastic solid is investigated. By using an integral transform method, a pair of two-dimensional singular integral equations governing stress and couple stress is formulated in terms of displacement transverse to the crack, macro and micro rotations, and microinertia. These equations are solved numerically, and solutions for dynamic stress intensity and couple stress intensity factors are obtained by utilizing the values of the strengths of the square root singularities in macrorotation and the gradient of microrotation at the crack tips.
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Han, S.Y., Narasimhan, M.N.L. & Kennedy, T.C. Dynamic propagation of a finite crack in a micropolar elastic solid. Acta Mechanica 85, 179–191 (1990). https://doi.org/10.1007/BF01181516
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DOI: https://doi.org/10.1007/BF01181516