Abstract
The process of crack propagation in an isotropic panel reinforced by supporting stiffeners is examined. It is assumed that the panel is weakened by a periodic set of straight cracks and there are areas where the crack edges interact with each other. The boundary problem on equilibrium of a periodic set of straight cracks with connections between crack edges in the case of external tensile loads and forces in the connections reduces to a nonlinear singular integrodifferential equation. Using the criterion of limit stretching of connections, the relationship for the residual strength of the panel is obtained.
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Original Russian Text © M.V. Mir-Salim-Zade, 2009, published in Problemy Mashinostroeniya i Nadezhnosti Mashin, 2009, No. 1, pp. 53–60.
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Mir-Salim-Zade, M.V. Limit state of a stringer panel with a periodic set of cracks. J. Mach. Manuf. Reliab. 38, 44–50 (2009). https://doi.org/10.3103/S1052618809010099
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DOI: https://doi.org/10.3103/S1052618809010099