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Vibration Control of Fractionally-Damped Beam Subjected to a Moving Vehicle and Attached to Fractionally-Damped Multiabsorbers

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  • Hashem S. Alkhaldi
  • Ibrahim M. Abu-Alshaikh
  • Anas N. Al-Rabadi

Abstract

This paper presents the dynamic response of Bernoulli-Euler homogeneous isotropic fractionally-damped simply-supported beam. The beam is attached to multi single-degree-of-freedom (SDOF) fractionally-damped systems, and it is subjected to a vehicle moving with a constant velocity. The damping characteristics of the beam and SDOF systems are described in terms of fractional derivatives. Three coupled second-order fractional differential equations are produced and then they are solved by combining the Laplace transform with the decomposition method. The obtained numerical results show that the dynamic response decreases as (a) the number of absorbers attached to the beam increases and (b) the damping-ratios of used absorbers and beam increase. However, there are some critical values of fractional derivatives which are different from unity at which the beam has less dynamic response than that obtained for the full-order derivatives model. Furthermore, the obtained results show very good agreements with special case studies that were published in the literature.

Suggested Citation

  • Hashem S. Alkhaldi & Ibrahim M. Abu-Alshaikh & Anas N. Al-Rabadi, 2013. "Vibration Control of Fractionally-Damped Beam Subjected to a Moving Vehicle and Attached to Fractionally-Damped Multiabsorbers," Advances in Mathematical Physics, Hindawi, vol. 2013, pages 1-12, December.
  • Handle: RePEc:hin:jnlamp:232160
    DOI: 10.1155/2013/232160
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