On Solutions of Boundary Value Problem for Fourth-Order Beam Equations

    Lazhar Bougoffa Affiliation
    ; Randolph Rach Affiliation
    ; Abdul-Majid Wazwaz Affiliation


In this paper, we consider the fourth-order linear differential equation u(4) +f(x)u = g(x) subject to the mixed boundary conditions u(0) = u(1) = u‘‘(0) = u‘‘(1) = 0. We first establish sufficient conditions on f(x) that guarantee a unique solution of this problem in the Hilbert space by using an a priori estimate. Accurate analytic solutions in series forms are obtained by a new variation of the Duan-Rach modified Adomian decomposition method (DRMA), and then extend this approach to some boundary value problems of fourth-order nonlinear beam equations. Also, a comparison of the two approximate solutions by the ADM with the Green function approach is presented.

Keyword : fourth-order equation, a priori estimate, Duan-Rach modified Adomian decomposition method, Adomian polynomials

How to Cite
Bougoffa, L., Rach, R., & Wazwaz, A.-M. (2016). On Solutions of Boundary Value Problem for Fourth-Order Beam Equations. Mathematical Modelling and Analysis, 21(3), 304-318.
Published in Issue
May 19, 2016
Abstract Views
PDF Downloads
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.