This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Three Suspension Roll Centers and their Application to Vehicle Dynamics
Technical Paper
2014-01-0136
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The automotive industry commonly uses two definitions of the suspension roll center, the Kinematic Roll Center (KRC) - of interest in studying suspension geometry, and the Force-based Roll Center (FRC) - of interest in studying steady-state vehicle dynamics. This paper introduces a third definition, the Dynamic Roll Axis (DRA) - of interest in studying transient vehicle dynamics. The location of each one of these roll centers has a unique application to vehicle design and development.
Although the physical meaning of each roll center is significantly different, the generic term “roll center” is often used without proper specification. This can lead to confusion about how roll centers influence vehicle behavior. This paper hopes to clarify some of this confusion and is organized into three parts: (1) Describes calculation methods for each of the three vehicle roll centers (for independent suspensions) as well as their relevance to vehicle dynamics; (2) Explains the relationship between the kinematic and force-based roll centers; (3) Offers recommendations on considerations for choosing roll center(s) location during vehicle design.
Recommended Content
Authors
Citation
Badiru, I., "The Three Suspension Roll Centers and their Application to Vehicle Dynamics," SAE Technical Paper 2014-01-0136, 2014, https://doi.org/10.4271/2014-01-0136.Also In
References
- Dixon , J.C. The Roll-Centre Concept in Vehicle Handling Dynamics Proceedings Institute of Mechanical Engineers (IMechE) 201 D1 1987
- SAE International Surface Vehicle Recommended Practice Vehicle Dynamics Terminology SAE Standard J670e Jul. 1976
- Gillespie , T.D. Fundamentals of Vehicle Dynamics Society of Automotive Engineers, Inc. Warrendale, PA 978-1-56091-199-9 1992 10.4271/R-114
- Puhn , F. How to Make Your Car Handle HPBooks New York 0-912656-46-8 1981
- Smith , C. Tune to Win Aero Publishers Fallbrook, CA 1978
- Joness , R. Understanding Vehicle Roll Using Mechanism Simulation Software SAE Technical Paper 1999-01-0030 1999 10.4271/1999-01-0030
- Mitchell , W. Asymmetric Roll Centers SAE Technical Paper 983085 1998 10.4271/983085
- Mitchell , W. Force-Based Roll Centers and an Improved Kinematic Roll Center SAE Technical Paper 2006-01-3617 2006 10.4271/2006-01-3617
- Greenwood , D.T. Principles of Dynamics Prentice-Hall New Jersey 1988
- Kawagoe , K. , Suma , K. , and Watanabe , M. Evaluation and Improvement of Vehicle Roll Behavior SAE Technical Paper 970093 1997 10.4271/970093