Modal analysis of rotating tires in stationary and rotating frames of reference

Mohammad Albakri*, Pablo Tarazaga

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Design and development of tires require accurate characterization of their dynamic response. For this purpose, Experimental Modal Analysis (EMA) techniques have been heavily utilized. However, as the focus shifts from stationary to rotating tires, testing solutions become limited and more challenging. Conventionally, cleat excitation with force measurements on the fixed spindle has been the standard approach for testing tires in rotation. However, the limited control on the input excitation has hindered the characterization of rotating tires, especially at high frequency. In this work, EMA of rotating tires mounted on a free-spindle rotating modal rig is investigated. Testing is conducted in stationary and rotating frames-of-reference. In the former configuration, electrodynamic shakers attached to the free-spindle are used to excite the tire and a Scanning Laser Doppler Vibrometer (SLDV) is used to measure the response at the sidewall. For the later frame-of-reference, piezoelectric actuators mounted inside the rotating tire are utilized for excitation, whereas accelerometers mounted on the sidewall are used for response measurement. The capabilities and limitations of both testing configurations are investigated at several rotational speeds. The effects of contact patch excitation and the frequency range of interest on EMA of rotating tires are also addressed.

Original languageEnglish
Title of host publicationTopics in Modal Analysis and Testing, Volume 8 - Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019
EditorsMichael L. Mains, Brandon J. Dilworth
PublisherSpringer New York LLC
Pages285-291
Number of pages7
ISBN (Print)9783030126834
DOIs
Publication statusPublished - 2020
Externally publishedYes
Event37th IMAC, A Conference and Exposition on Structural Dynamics, 2019 - Orlando, United States
Duration: 28 Jan 201931 Jan 2019

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference37th IMAC, A Conference and Exposition on Structural Dynamics, 2019
Country/TerritoryUnited States
CityOrlando
Period28/01/1931/01/19

Keywords

  • Contact patch excitation
  • Modal analysis
  • Piezoelectric excitation
  • Rotating tire

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