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Nonlinear Vibration Absorber for Mitigation of Torsional Vibrations

[+] Author Affiliations
Ammaar Bin Tahir, Oleg Shiryayev, Hamad Karki, Nader Vahdati

The Petroleum Institute, Abu Dhabi, UAE

Paper No. IMECE2012-86715, pp. 591-599; 9 pages
doi:10.1115/IMECE2012-86715
From:
  • ASME 2012 International Mechanical Engineering Congress and Exposition
  • Volume 4: Dynamics, Control and Uncertainty, Parts A and B
  • Houston, Texas, USA, November 9–15, 2012
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4520-2
  • Copyright © 2012 by ASME

abstract

This work discusses the effects of utilizing a nonlinear energy absorber with linear and cubic stiffness characteristic in mitigating torsional vibrations in a 5 degrees-of-freedom (5-DOF) rotational system. Results comparing the effects of adding a linear TMD in the system with those obtained by adding an NES are presented which demonstrate the usefulness of an NES over a conventional TMD. Subsequently, a simpler translational system comprising of an NES is considered and an optimization-based tuning methodology is used in order to tune the NES for maximum dissipation of vibration energy. The results are compared with those obtained for the system with a linear absorber.

Copyright © 2012 by ASME

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