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Dynamic behavior of a multispan continuous beam traversed by a moving oscillator

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Abstract

In this article, dynamic behavior of a multispan continuous beam influenced by a moving oscillator is studied. It is assumed that each span of the continuous beam obeys uniform Euler–Bernoulli beam theory. By exploiting a series of beam natural mode shapes, the governing differential equation of beam vibration is transformed into the time domain for which a time integration method is applied. The dynamic amplification factor (DAF) of the base beam is extensively analyzed for different moving oscillator’s weight, stiffness and velocity. At the asymptotic states, the presented results indicate a close agreement with previously published benchmark solutions for moving force and moving mass models. In addition, it is shown that the structural response can be considerably altered by the variation of the moving oscillator stiffness within a notable range of influential parameters.

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Author information

Authors and Affiliations

  1. Department of Civil Engineering, Tabari University, Babol, Iran

    Mahdi Ebrahimi

  2. Department of Civil Engineering, Qaemshahr Islamic Azad University, Qaemshahr, Iran

    Sirous Gholampour

  3. Department of Civil Engineering, University of Tabriz, Tabriz, P.O. Box: 5166616471, Iran

    Hassan Jafarian Kafshgarkolaei

  4. Department of Civil Engineering, Rasht Branch, Islamic Azad University Rasht, Rasht, Iran

    Iman Mohammadpour Nikbin

Authors
  1. Mahdi Ebrahimi
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  2. Sirous Gholampour
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  3. Hassan Jafarian Kafshgarkolaei
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  4. Iman Mohammadpour Nikbin
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Correspondence to Hassan Jafarian Kafshgarkolaei.

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Ebrahimi, M., Gholampour, S., Jafarian Kafshgarkolaei, H. et al. Dynamic behavior of a multispan continuous beam traversed by a moving oscillator. Acta Mech 226, 4247–4257 (2015). https://doi.org/10.1007/s00707-015-1474-4

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  • DOI: https://doi.org/10.1007/s00707-015-1474-4

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