An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin Method

The analysis of beam deformation on elastic foundation is very important in engineering applications, and studies of beams on linear elastic foundations are abundant and accurate.  For practical problems, it is always demanded that the influence of the nonlinear effect of the foundation on the analy...

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Main Authors: Junlong Jiang, Chencheng Lian, Baochen Meng, Huimin Jing, Xiang Fang, Ji Wang
Format: Article
Language:English
Published: Shahid Chamran University of Ahvaz 2025-04-01
Series:Journal of Applied and Computational Mechanics
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Online Access:https://jacm.scu.ac.ir/article_19265_d7325bc18af2146399e66db5e1adbbd7.pdf
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author Junlong Jiang
Chencheng Lian
Baochen Meng
Huimin Jing
Xiang Fang
Ji Wang
author_facet Junlong Jiang
Chencheng Lian
Baochen Meng
Huimin Jing
Xiang Fang
Ji Wang
author_sort Junlong Jiang
collection DOAJ
description The analysis of beam deformation on elastic foundation is very important in engineering applications, and studies of beams on linear elastic foundations are abundant and accurate.  For practical problems, it is always demanded that the influence of the nonlinear effect of the foundation on the analytical methods and results must be considered. This study treats the static bending problem of an elastic beam resting on the nonlinear elastic foundation by solving the nonlinear differential equations with the Galerkin method, converting the nonlinear differential equations to a system of nonlinear algebraic equations for approximate solutions.  The nonlinear equations are solved with a series expansion of the deflection satisfying the boundary conditions, and coefficients of the series are obtained with usual techniques including the iterative method. The accuracy of the approximate solution with the Galerkin method is verified through examples from earlier studies.  The procedure and results show that the Galerkin method is effective in solving static nonlinear differential equations in addition to the nonlinear vibrations with the extended Galerkin method in earlier studies.
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institution Kabale University
issn 2383-4536
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publishDate 2025-04-01
publisher Shahid Chamran University of Ahvaz
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series Journal of Applied and Computational Mechanics
spelling doaj-art-c56b44a64e4047f5a3c94995ca6fd74c2025-08-20T03:40:40ZengShahid Chamran University of AhvazJournal of Applied and Computational Mechanics2383-45362025-04-0111228529310.22055/jacm.2024.46952.463319265An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin MethodJunlong Jiang0Chencheng Lian1Baochen Meng2Huimin Jing3Xiang Fang4Ji Wang5Piezoelectric Device Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, 818 Fenghua Road, Ningbo, 315211 Zhejiang, ChinaPiezoelectric Device Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, 818 Fenghua Road, Ningbo, 315211 Zhejiang, ChinaPiezoelectric Device Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, 818 Fenghua Road, Ningbo, 315211 Zhejiang, ChinaPiezoelectric Device Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, 818 Fenghua Road, Ningbo, 315211 Zhejiang, ChinaPiezoelectric Device Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, 818 Fenghua Road, Ningbo, 315211 Zhejiang, ChinaPiezoelectric Device Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, 818 Fenghua Road, Ningbo, 315211 Zhejiang, ChinaThe analysis of beam deformation on elastic foundation is very important in engineering applications, and studies of beams on linear elastic foundations are abundant and accurate.  For practical problems, it is always demanded that the influence of the nonlinear effect of the foundation on the analytical methods and results must be considered. This study treats the static bending problem of an elastic beam resting on the nonlinear elastic foundation by solving the nonlinear differential equations with the Galerkin method, converting the nonlinear differential equations to a system of nonlinear algebraic equations for approximate solutions.  The nonlinear equations are solved with a series expansion of the deflection satisfying the boundary conditions, and coefficients of the series are obtained with usual techniques including the iterative method. The accuracy of the approximate solution with the Galerkin method is verified through examples from earlier studies.  The procedure and results show that the Galerkin method is effective in solving static nonlinear differential equations in addition to the nonlinear vibrations with the extended Galerkin method in earlier studies.https://jacm.scu.ac.ir/article_19265_d7325bc18af2146399e66db5e1adbbd7.pdfnonlinear foundationbeamdeflectiongalerkin method
spellingShingle Junlong Jiang
Chencheng Lian
Baochen Meng
Huimin Jing
Xiang Fang
Ji Wang
An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin Method
Journal of Applied and Computational Mechanics
nonlinear foundation
beam
deflection
galerkin method
title An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin Method
title_full An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin Method
title_fullStr An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin Method
title_full_unstemmed An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin Method
title_short An Approximate Solution of the Bending of Beams on a Nonlinear Elastic Foundation with the Galerkin Method
title_sort approximate solution of the bending of beams on a nonlinear elastic foundation with the galerkin method
topic nonlinear foundation
beam
deflection
galerkin method
url https://jacm.scu.ac.ir/article_19265_d7325bc18af2146399e66db5e1adbbd7.pdf
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