Vibration analysis of a composite Timoshenko beam with actuating layers under motion of a uniformlly traveling partially disributed mass

Ahmadian, M. T ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2007-42863
  3. Publisher: 2008
  4. Abstract:
  5. In this paper, a thorough investigation of response of a composite Timoshenko simply-supported beam with actuating layers, under the motion of a partially distributed mass is studied and a control system based on the feedback of beam's deflection velocity is applied to alleviate and suppress the vibration of the beam in either case when the mass is still traveling on the beam or departed the beam. The actuating layers are made up of Terfenol-D smart material which are sensitive to magnetic field (magnetostrictive materials) and this trait makes them very suitable to be used for vibration control. They introduce damping to the system through which the energy of system dissipates. The response of the beam is analyzed in terms of lamination scheme, material properties, damping coefficient (i.e. gain of controller), velocity of motion and geometrical features of the moving mass (e.g. moving mass length and height). The governing equations of system are obtained using Hamilton's principle and a solution is sought using Galerkin's method, the resulting coupled system of ODEs are solved numerically by virtue of the Newmark method. The results are compared with those available in literatures along with discussion on agreements and disagreements. Copyright © 2007 by ASME
  6. Keywords:
  7. Actuating layers ; Disributed mass ; Material properties ; Composite Timoshenko beams ; Coupled systems ; Damping coefficients ; Geometrical features ; Governing equations ; Hamilton's principle ; Magnetostrictive material ; Simply supported beams ; Intelligent materials ; Velocity control ; Damping ; Galerkin methods ; Magnetostrictive devices ; Composite beams and girders ; Vibration analysis
  8. Source: ASME International Mechanical Engineering Congress and Exposition, IMECE 2007, Seattle, WA, 11 November 2007 through 15 November 2007 ; Volume 9 PART C , 2008 , Pages 1933-1942 ; 0791843033 (ISBN); 9780791843031 (ISBN)
  9. URL: https://asmedigitalcollection.asme.org/IMECE/proceedings-abstract/IMECE2007/43033/1933/328962