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Growing Science » Engineering Solid Mechanics » Free vibration analysis of a non-uniform cantilever Timoshenko beam with multiple concentrated masses using DQEM

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Engineering Solid Mechanics

ISSN 2291-8752 (Online) - ISSN 2291-8744 (Print)
Quarterly Publication
Volume 1 Issue 1 pp. 9-20 , 2013

Free vibration analysis of a non-uniform cantilever Timoshenko beam with multiple concentrated masses using DQEM Pages 9-20 Right click to download the paper Download PDF

Authors: K. Torabi, H. Afshari, M. Heidari-Rarani

DOI: 10.5267/j.esm.2013.06.002

Keywords: Transverse vibration, Non-uniform Timoshenko beam, Concentrated masses, DQEM

Abstract: In this paper, a differential quadrature element method (DQEM) is developed for free transverse vibration analysis of a non-uniform cantilever Timoshenko beam with multiple concentrated masses. Governing equations, compatibility and boundary conditions are formulated according to the differential quadrature rules. The compatibility conditions at the position of each concentrated mass are assumed as the continuity in the vertical displacement, rotation and bending moment and discontinuity in the transverse force due to acceleration of the concentrated mass. The effects of number, magnitude and position of the masses on the value of the natural frequencies are investigated. The accuracy, convergence and efficiency of the proposed method are confirmed by comparing the obtained numerical results with the analytical solutions of other researchers. The two main advantages of the proposed method in comparison with the exact solutions available in the literature are: 1) it is less time-consuming and subsequently moreefficient; 2) it is able to analyze the free vibration of the beams whose section varies as an arbitrary function which is difficult or sometimes impossible to solve with analytical methods.

How to cite this paper
Torabi, K., Afshari, H & Heidari-Rarani, M. (2013). Free vibration analysis of a non-uniform cantilever Timoshenko beam with multiple concentrated masses using DQEM.Engineering Solid Mechanics, 1(1), 9-20.

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Journal: Engineering Solid Mechanics | Year: 2013 | Volume: 1 | Issue: 1 | Views: 4738 | Reviews: 0

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