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Attenuation of random vibration in plates

Jolghazi, S ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. This paper is a study on control of vibration of plate subjected to random vibration loading using magnetorheological (MR) dampers. Some key issues, i.e. model reduction, modeling of the MR dampers and their applications in vibration control of plates, are addressed in this work. MR dampers are semi-active devices that use MR fluids to produce a controllable damping with low power requirement. In this paper, first, a model reduction method for preparing a reduce order model (ROM) is presented. The method uses an optimal model truncation method which in it the ROM to be constructed such that it will provide the same frequency response characteristics as the original full model within the frequency range of interest. A new model reduction method which is purposed minimizes the error of a modal-truncation based reduced order model. The proposed method is implemented by using a Genetic algorithm (GA), and can be efficiently used to find a reduced order for plate. An H 2 controller based on obtained ROM is designed, and used to control the vibration of cantilever plate. Effectiveness of proposed method is verified numerically. Simulation results have shown its great potentials for vibration control of plates. © AES-Advanced Engineering Solutions
  4. Keywords:
  5. Genetic algorithm ; Random vibration ; Cantilever plate ; Control of vibrations ; Controllable damping ; Frequency ranges ; Frequency response characteristic ; Full model ; Low power ; Magneto-rheological dampers ; Model reduction ; Model reduction method ; MR dampers ; MR fluid ; New model ; Optimal model ; Plate ; Random vibrations ; Reduced order ; Reduced order models ; Semi-active devices ; Truncation method ; Frequency response ; Genetic algorithms ; Vibration control ; Vibrations (mechanical)
  6. Source: AES-ATEMA International Conference Series - Advances and Trends in Engineering Materials and their Applications, 1 September 2009 through 4 September 2009, Hamburg ; 2009 , Pages 57-63 ; 19243642 (ISSN) ; 9780978047962 (ISBN)
  7. URL: http://www.scimagojr.com/journalsearch.php?q=21100197701&tip=sid&clean=0