APPROXIMATE SOLUTIONS OF DAMPED NON LINEAR SYSTEM WITH VARYING PARAMETER AND DAMPING FORCE

Author:

KARIM REZAUL1,DEY PINAKEE1,AKTER SOMI1,ASIF AREFIN MOHAMMAD2,SHAHJAHAN MIAH SAIKH1

Affiliation:

1. Mawlana Bhashani Science and Technology University

2. Jashore University of Science & Technology

Abstract

The study of second-order damped nonlinear differential equations is important in the development of the theory of dynamical systems and the behavior of the solutions of the over-damped process depends on the behavior of damping forces. We aim to develop and represent a new approximate solution of a nonlinear differential system with damping force and an approximate solution of the damped nonlinear vibrating system with a varying parameter which is based on Krylov–Bogoliubov and Mitropolskii (KBM) Method and Harmonic Balance (HB) Method. By applying these methods we solve and also analyze the finding result of an example. Moreover, the solutions are obtained for different initial conditions, and figures are plotted accordingly where MATHEMATICA and C++ are used as a programming language.

Publisher

Knowvel Journals

Reference21 articles.

1. N. N. Bogoliubov, Y. Mitropolskii, Asymptotic methods in the theory of nonlinear oscillations, Gordan and Breach, New York, 1961.

2. G. Bojadziev and J. Edwards, “On some method for non-oscillatory and oscillatory processes,” in Polish Academy of Sciences, Institute of Fundamental Technical Research, Nonlinear Vibration Probl, 1981, no. 20, pp. 69–79.

3. H. Cheng and T. T. Wu, “An Aging Spring,” Stud. Appl. Math., vol. 49, no. 2, pp. 183–185, 1970.

4. N. N. Krylov, N.N. Bogoliubov, Introduction to nonlinear mechanics, Princeton University Press, New Jersey, 1947.

5. Y. Mitropolskii, Problems on asymptotic methods of non-stationary oscillations ( in Russian), Izdat, Nauka, Moscow,1964.

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