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Investigation of critical influential speed for moving mass problems on beams

Dehestani, M ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.apm.2009.01.003
  3. Publisher: 2009
  4. Abstract:
  5. A traveling mass due to its mass inertia has significant effects on the dynamic response of the structures. According to recent developments in structural materials and constructional technologies, the structures are likely to be affected by sudden changes of masses and substructure elements, in which the inertia effect of a moving mass is not negligible. The transverse inertia effects have been a topic of interest in bridge dynamics, design of railway tracks, guide way systems and other engineering applications such as modern high-speed precision machinery process. In this study an analytical-numerical method is presented which can be used to determine the dynamic response of beams carrying a moving mass, with various boundary conditions. It has been shown that the Coriolis acceleration, associated with the moving mass as it traverses along the vibrating beam shall be considered as well. Influences regarding the speed of the moving mass on the dynamic response of beams with various boundary conditions were also investigated. Results illustrated that the speed of a moving mass has direct influence on the entire structural dynamic response, depending on its boundary conditions. Critical influential speeds in the moving mass problems were introduced and obtained in numerical examples for various BC's. © 2009 Elsevier Inc. All rights reserved
  6. Keywords:
  7. Boundary condition ; Dynamic response ; Analytical-numerical method ; Bridge dynamics ; Coriolis acceleration ; Critical influential speed (CIS) ; Engineering applications ; High-speed ; Inertia effects ; Moving mass ; Numerical example ; Precision machinery ; Railway track ; Structural materials ; Substructure elements ; Sudden change ; Transverse inertia effect ; Vibrating beam ; Attitude control ; Boundary conditions ; Building materials ; Machine design ; Machinery ; Precision engineering ; Railroads ; Speed ; Structural dynamics ; Dynamic response
  8. Source: Applied Mathematical Modelling ; Volume 33, Issue 10 , 2009 , Pages 3885-3895 ; 0307904X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0307904X0900016X