Abstract
This paper compares the analytical model of the axisymmetric bending of a circular sandwich plate with the finite element method (FEM) based numerical model. The differential equations of the bending of circular symmetrical sandwich plates with isotropic face sheets and a nonlinear elastic core material are obtained. The perturbation method of a small parameter is used to represent the nonlinear differential equations as a sequence of linear equations specifying each other. The linear differential equations are solved by reducing them to the Bessel equation. The results of the calculations with the use of the analytical and FEM models are compared with the results obtained by other authors by the example of the following problems: (1) axisymmetric transverse bending of a circular sandwich plate; (2) axisymmetric transverse bending of an annular sandwich plate. The effect of the nonlinear elasticity of the core material on the strained state of the sandwich plate is described.
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Original Russian Text © A.V. Kudin, S.V. Choporov, S.I. Gomenyuk, 2017, published in Matematicheskoe Modelirovanie, 2017, Vol. 29, No. 2, pp. 63–78
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Kudin, A.V., Choporov, S.V. & Gomenyuk, S.I. Axisymmetric bending of circular and annular sandwich plates with nonlinear elastic core material. Math Models Comput Simul 9, 601–612 (2017). https://doi.org/10.1134/S2070048217050076
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DOI: https://doi.org/10.1134/S2070048217050076