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Design and Performance Analysis of Inerter-Based Vibration Control Systems

  • Irina F. Lazar
  • Simon A. Neild
  • David J. Wagg
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

This paper introduces a novel type of passive control system designed to suppress unwanted vibrations in civil engineering structures subjected to base and lateral excitation. The new system configuration, inspired by traditional tuned mass dampers (TMD) where the mass element has been replaced with an inerter is presented. An inerter is a two-terminal flywheel device with the capacity to generate high apparent mass and it was initially developed for Formula 1 racing cars suspension systems. An analytical tuning procedure for inerter-based systems has been developed. This is inspired by traditional tuning rules for damped vibration absorbers. The inerter-based system performance is assessed in comparison to TMDs. It is shown that the new control system suppresses the response of all modes, which constitutes an advantage with respect to TMDs. Moreover, our analysis shows that the new system is most effective when located at ground storey level, which is advantageous for its installation. A multiple-degree-of-freedom structure is analysed numerically to verify our theoretical findings. This has been subjected to a range of excitation inputs, including wind and earthquake loads and its performance was similar or superior to that of TMDs, making the new device an attractive vibration-suppression method.

Keywords

Inerter Tuned mass damper Vibration suppression Base excitation Lateral excitation 

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Copyright information

© The Society for Experimental Mechanics, Inc. 2014

Authors and Affiliations

  • Irina F. Lazar
    • 1
  • Simon A. Neild
    • 1
  • David J. Wagg
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of BristolBristolUK

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