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A Tire Model for Off-Highway Vehicle Simulation and Comfort Evaluation

[+] Author Affiliations
Thomas H. Langer

A/S Hydrema Produktion, Sto̸vring, Denmark

Michael R. Hansen, Morten K. Ebbesen

University of Agder, Grimstad, Norway

Ole O̸. Mouritsen

Aalborg University, Aalborg, Denmark

Paper No. DETC2009-87802, pp. 2057-2065; 9 pages
doi:10.1115/DETC2009-87802
From:
  • ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 4: 7th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B and C
  • San Diego, California, USA, August 30–September 2, 2009
  • Conference Sponsors: Design Engineering Division and Computers in Engineering Division
  • ISBN: 978-0-7918-4901-9 | eISBN: 978-0-7918-3856-3
  • Copyright © 2009 by ASME

abstract

Manufacturers of construction machinery are challenged to accommodate legal requirements on the vibration exposure associated with their products. Hence, the ability to evaluate ride comfort by virtual prototyping is needed. One of the derived necessities is a modeling approach that can handle big off-road tires on irregular terrain and even the passing of sharp corner obstacles. In this paper a simple tire model combining the well known slip theory and a displaced volume approach is presented. A non-gradient optimization routine is applied for parameter identification by minimizing the difference between simulated data and experimental data obtained from a full vehicle model passing a set of well defined obstacles. The two most important deviations have been identified as frequency and force amplitude response because comfort is computed as a frequency weighted acceleration of the operator. Based on the obtained agreement between simulated and measured results the tire model is considered as well suited for comfort evaluation and, subsequently, reliable model based design.

Copyright © 2009 by ASME

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