TY - GEN
T1 - Modal analysis of rotating tires in stationary and rotating frames of reference
AU - Albakri, Mohammad
AU - Tarazaga, Pablo
N1 - Publisher Copyright:
© Society for Experimental Mechanics, Inc. 2020.
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Contact patch excitation
KW - Modal analysis
KW - Piezoelectric excitation
KW - Rotating tire
UR - http://www.scopus.com/inward/record.url?scp=85065985647&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-12684-1_29
DO - 10.1007/978-3-030-12684-1_29
M3 - Conference contribution
AN - SCOPUS:85065985647
SN - 9783030126834
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 285
EP - 291
BT - Topics in Modal Analysis and Testing, Volume 8 - Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019
A2 - Mains, Michael L.
A2 - Dilworth, Brandon J.
PB - Springer New York LLC
T2 - 37th IMAC, A Conference and Exposition on Structural Dynamics, 2019
Y2 - 28 January 2019 through 31 January 2019
ER -