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The Significance of Powertrain Characteristics on the Chatter of Racing Motorcycles

[+] Author Affiliations
Vittore Cossalter, Roberto Lot, Matteo Massaro

University of Padua, Padova, Italy

Paper No. ESDA2012-82274, pp. 607-613; 7 pages
  • ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 3: Advanced Composite Materials and Processing; Robotics; Information Management and PLM; Design Engineering
  • Nantes, France, July 2–4, 2012
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4486-1
  • Copyright © 2012 by ASME


The chatter of motorcycles is a self-excited vibration that may appear during braking. This vibration can be very strong and the accelerations of both the rear and front unsprung masses can reach 5–10g with frequencies in the range 17–22Hz, seriously hindering the rider’s control of the vehicle. Very few studies exist on this topic, and the first work that compares experimental data to numerical simulation and addresses the fundamental mechanisms of the chatter genesis has been recently published. In the current paper authors present the continuation of the research, and in particular the results of a parametric analysis performed to identify the most important design and motion parameters when it comes to chatter stability. The analysis is carried out by simulating chatter with a validated nonlinear motorcycle multibody model which captures the most important vehicle features.

Copyright © 2012 by ASME
Topics: Chatter , Motorcycles



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