Analytical Solution for Vibration of Continuously Varying-Thickness Beams Resting on Pasternak Elastic Foundations
Year: 2021
Author: Zhiyuan Li, Yepeng Xu, Dan Huang
Advances in Applied Mathematics and Mechanics, Vol. 13 (2021), Iss. 4 : pp. 850–866
Abstract
In this paper, the vibration characteristics of beams with arbitrarily and continuously varying thickness and resting on Pasternak elastic foundations were analytically studied based on the elasticity theory directly. The general expression of stress function, which exactly satisfies the governing differential equations and the boundary conditions, was derived. The frequency equation governing the free vibration of varying-thickness beams resting on a Pasternak elastic foundation can be obtained by using the Fourier series expansion of the boundary conditions on the upper and lower surfaces of the beam. Convergence and comparison studies were conducted to demonstrate the high accuracy and efficiency of the present method. Application of the proposed analytical method to some typical beams with different geometry, Poisson's ratio, elastic coefficients of foundation were conducted further, and some new results are reported which may be used as an alternative of benchmark or standard solutions for numerical or other approximate results.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/aamm.OA-2019-0284
Advances in Applied Mathematics and Mechanics, Vol. 13 (2021), Iss. 4 : pp. 850–866
Published online: 2021-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 17
Keywords: Varying-thickness beam free vibration Pasternak elastic foundation analytical solution Fourier series expansion.
Author Details
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Large deformation analysis of functionally graded beam with variable cross-section by using peridynamic differential operator
Li, Zhiyuan
Huang, Dan
Yan, Kanghao
Xu, Yepeng
Composite Structures, Vol. 279 (2022), Iss. P.114788
https://doi.org/10.1016/j.compstruct.2021.114788 [Citations: 23]