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Thermoelastoplastic deformation of noncircular cylindrical shells

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International Applied Mechanics Aims and scope

A method to determine the nonstationary temperature fields and the thermoelastoplastic stress-strain state of noncircular cylindrical shells is developed. It is assumed that the physical and mechanical properties are dependent on temperature. The heat-conduction problem is solved using an explicit difference scheme. The temperature variation throughout the thickness is described by a power polynomial. For the other two coordinates, finite differences are used. The thermoplastic problem is solved using the geometrically nonlinear theory of shells based on the Kirchhoff-Love hypotheses. The theory of simple processes with deformation history taken into account is used. Its equations are linearized by a modified method of elastic solutions. The governing system of partial differential equations is derived. Variables are separated in the case where the curvilinear edges are hinged. The partial case where the stress-strain state does not change along the generatrix is examined. The systems of ordinary differential equations obtained in all these cases are solved using Godunov's discrete orthogonalization. The temperature field in a shell with elliptical cross-section is studied. The stress-strain state found by numerical integration along the generatrix is compared with that obtained using trigonometric Fourier series. The effect of a Winkler foundation on the stress-strain state is analyzed

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Authors and Affiliations

  1. S. P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    V. A. Merzlyakov

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  1. V. A. Merzlyakov
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Translated from Prikladnaya Mekhanika, Vol. 44, No. 8, pp. 79–90, August 2008.

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Merzlyakov, V.A. Thermoelastoplastic deformation of noncircular cylindrical shells. Int Appl Mech 44, 892–904 (2008). https://doi.org/10.1007/s10778-008-0101-7

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  • DOI: https://doi.org/10.1007/s10778-008-0101-7

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