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Math. Comput. Appl. 2011, 16(3), 773-783; doi:10.3390/mca16030773

Free Vibration Analysis of Beams on Variable Winkler Elastic Foundation by Using the Differential Transform Method

Faculty of Aeronautics and Astronautics Istanbul Technical University, 34469, Maslak Istanbul, Turkey
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Published: 1 December 2011
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Abstract

In this study, free vibration of an Euler-Bernoulli beam resting on a variable Winkler foundation is considered. Structures which are supported along their length such as beams or pipelines resting on elastic soil are very commonly modeled with a Winkler foundation. In this problem, the elastic coefficient of the foundation is variable along the beam major axis. Constant, linear and parabolic variations are considered. The problem is handled for three different boundary conditions: simply supported-simply supported, clamped-clamped and cantilever (clamped-free) beams. The governing differential equations of the beam are solved by using Differential Transform Method (DTM). DTM is an easy transformation technique based on Taylor expansion series, providing high accuracy.
Keywords: Differential Transform Method; DTM, Elastic soil; Vibration; Beam; Pipeline Differential Transform Method; DTM, Elastic soil; Vibration; Beam; Pipeline
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Kacar, A.; Tan, H.T.; Kaya, M.O. Free Vibration Analysis of Beams on Variable Winkler Elastic Foundation by Using the Differential Transform Method. Math. Comput. Appl. 2011, 16, 773-783.

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