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On the Dynamics of Fractional Visco-Elastic Beams

[+] Author Affiliations
Salvatore Di Lorenzo, Francesco P. Pinnola, Antonina Pirrotta

Università di Palermo, Palermo, Italy

Paper No. IMECE2012-86566, pp. 1273-1281; 9 pages
doi:10.1115/IMECE2012-86566
From:
  • ASME 2012 International Mechanical Engineering Congress and Exposition
  • Volume 4: Dynamics, Control and Uncertainty, Parts A and B
  • Houston, Texas, USA, November 9–15, 2012
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4520-2
  • Copyright © 2012 by ASME

abstract

With increasing advanced manufacturing process, visco-elastic materials are very attractive for mitigation of vibrations, provided that you may have advanced studies for capturing the realistic behavior of such materials.

Experimental verification of the visco-elastic behavior is limited to some well-known low order models as the Maxwell or Kelvin models. However, both models are not sufficient to model the visco-elastic behavior of real materials, since only the Maxwell type can capture the relaxation tests and the Kelvin the creep tests, respectively. Very recently, it has been stressed that the most suitable model for capturing the visco-elastic behavior is the spring-pot, characterized by a fractional constitutive law.

Based on this assumption, the quasi-static behavior has been investigated very recently, however for noise control there is a need of exploiting the dynamic behavior of such a fractional visco-elastic beam.

The present paper introduces the dynamic response of fractional visco-elastic Euler-Bernoulli beam under dynamic loads.

Copyright © 2012 by ASME

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