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System identification of energy dissipation in a mechanical model undergoing high velocities: An indirect use of perpetual points

Publication ,  Journal Article
Brzeski, P; Virgin, LN
Published in: Mechanical Systems and Signal Processing
August 1, 2018

Energy dissipation is often the most challenging component of system identification in the modeling of dynamical behavior in mechanical systems. Even for a relatively simple single-degree-of-freedom system such as the rigid-arm pendulum, it can be difficult to choose the form of the best damping model, as well as the subsequent challenge of estimating the appropriate parameters, especially for a model that accurately captures the nature of energy dissipation over a wide range of operational conditions. This paper specifically focuses on a mechanical system in which subtle changes can be made to the system with a view to isolating and modeling energy dissipation. The approach described in this paper was developed as a by-product of experimentally investigating perpetual points. It is shown that certain features of high-velocity, spinning motion lends itself to greater fidelity in the data-fitting process and thus added confidence in choosing the most accurate energy dissipation model with the most appropriate parameters.

Duke Scholars

Published In

Mechanical Systems and Signal Processing

DOI

EISSN

1096-1216

ISSN

0888-3270

Publication Date

August 1, 2018

Volume

108

Start / End Page

115 / 125

Related Subject Headings

  • Acoustics
  • 4017 Mechanical engineering
  • 4006 Communications engineering
  • 0915 Interdisciplinary Engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
 

Citation

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Brzeski, P., & Virgin, L. N. (2018). System identification of energy dissipation in a mechanical model undergoing high velocities: An indirect use of perpetual points. Mechanical Systems and Signal Processing, 108, 115–125. https://doi.org/10.1016/j.ymssp.2018.02.010
Brzeski, P., and L. N. Virgin. “System identification of energy dissipation in a mechanical model undergoing high velocities: An indirect use of perpetual points.” Mechanical Systems and Signal Processing 108 (August 1, 2018): 115–25. https://doi.org/10.1016/j.ymssp.2018.02.010.
Brzeski P, Virgin LN. System identification of energy dissipation in a mechanical model undergoing high velocities: An indirect use of perpetual points. Mechanical Systems and Signal Processing. 2018 Aug 1;108:115–25.
Brzeski, P., and L. N. Virgin. “System identification of energy dissipation in a mechanical model undergoing high velocities: An indirect use of perpetual points.” Mechanical Systems and Signal Processing, vol. 108, Aug. 2018, pp. 115–25. Scopus, doi:10.1016/j.ymssp.2018.02.010.
Brzeski P, Virgin LN. System identification of energy dissipation in a mechanical model undergoing high velocities: An indirect use of perpetual points. Mechanical Systems and Signal Processing. 2018 Aug 1;108:115–125.
Journal cover image

Published In

Mechanical Systems and Signal Processing

DOI

EISSN

1096-1216

ISSN

0888-3270

Publication Date

August 1, 2018

Volume

108

Start / End Page

115 / 125

Related Subject Headings

  • Acoustics
  • 4017 Mechanical engineering
  • 4006 Communications engineering
  • 0915 Interdisciplinary Engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering