Volume 41, Issue 1 (9-2022)
2022, 41(1): 61-77 |
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Salehipour H. Analytical and Numerical Study on the Buckling of Homogeneous Beams Coated by a Functionally Graded Porous Layer with Different Boundary Conditions. Computational Methods in Engineering 2022; 41 (1) :61-77
URL: http://jcme.iut.ac.ir/article-1-870-en.html
URL: http://jcme.iut.ac.ir/article-1-870-en.html
Department of Mechanical Engineering, Ilam University, Ilam, Iran , h.salehipour@ilam.ac.ir
Abstract: (455 Views)
In this paper, static buckling of homogeneous beams coated by a functionally graded porous layer with different boundary conditions is investigated based on the Timoshenko beam theory. The principle of virtual work has been used to obtain the governing equations. Two different methods, namely analyticalsolution and numerical solution are used to solve the governing equations and extract the buckling force. The governing equations are coupled as a series of ordinary differential equations. In the analytical solution, these equations are first uncoupled using a series of mathematical operations, and are then solved. The obtained solution has a series of parameters and unknown constants. Using the boundary conditions at the boundaries of the beam, a homogeneous system of equations is extracted, from which the axial buckling force is obtained. In the numerical solution, the generalized differential quadrature method is used to solve the static equations. Finally, the numerical results are presented and the effects of various parameters such as thickness to beam length ratio, porous layer thickness, porosity parameter, etc. on the buckling of the beam are investigated. Comparison of the results obtained from the two analytical and numerical solution methods confirms the accuracy and validity of both methods.
Keywords: Static buckling, Timoshenko beam, Functionally graded porous material, Exact analytical solution, Generalized differential quadrature method.
Type of Study: Research |
Subject:
General
Received: 2021/03/30 | Accepted: 2021/06/27 | Published: 2022/09/20
Received: 2021/03/30 | Accepted: 2021/06/27 | Published: 2022/09/20
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