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Suspension Parameter Measurement Using Side-Pull Test To Enhance Modeling of Vehicle Roll
Technical Paper
1999-01-1323
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper describes a new laboratory test facility for measuring suspension parameters that affect rollover. The Side-Pull mechanism rolls the test vehicle through a cable attached rigidly at its center of gravity (CG). Changes in wheel camber and wheel steer angles are measured as a function of body roll angle. The roll test simulates a steady-state cornering. Thus, both compliance and kinematic forces are fed simultaneously to the vehicle as they would be applied in a real cornering situation. The lateral load transfer, and roll angle as a function of simulated lateral acceleration is determined.
The Side-Pull Roll Measurement has advantages over the conventional roll tests where the rolling force couple is applied vertically. The Side-Pull mechanism rolls the vehicle in a unrestricted way with horizontal forces applied at the tire / pad contact and the CG location. Thus, the measurements take into account coupling of compliance with roll. The -Side-Pull method eliminates the need to run separate tests for suspension kinematics and compliance properties.
Description of the hardware and testing method is given. Results from the side-pull measurement for the 1997 Jeep Cherokee are compared with field test results and with conventional Suspension Parameter Measurement Device (SPMD) results. It is found that slow continuous side-pull test simulates closely the steady-state cornering. The results from superposition of kinematics and compliance are compared with the side-pull results. Recommendations are given for development of the Side-Pull Suspension Measurement Facility to make use of it in roll modeling.
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Erdogan, L., Guenther, D., and Heydinger, G., "Suspension Parameter Measurement Using Side-Pull Test To Enhance Modeling of Vehicle Roll," SAE Technical Paper 1999-01-1323, 1999, https://doi.org/10.4271/1999-01-1323.Also In
References
- S.E.A. Inc. Vehicle Dynamics Division “Vehicle Inertia Measurement Facility, Suspension Kinematics and Compliance, Shock Absorber, and Suspension Component Geometric and Inertia Measurement Results 1997 Jeep Cherokee Sport” 1997
- Gillepsie T. “Fundamentals of Vehicle Dynamics” SAE 1992
- Dixon J. C. “Tyres, Suspension and Handling” Cambridge University Press 1991
- Ellis J. R. “Vehicle Handling Dynamics” Mechanical Engineering Publications 1994
- Genta G. “Motor Vehicle Dynamics Modeling and Simulation” Series on Advances in Mathematics for Applied Sciences 43 1997
- Bergman Walter “Effects of Compliance on Vehicle Handling Properties” SAE Paper 700369
- Chen H. F. Coovert D. A. Guenther D. A. “Suspension Testing on the New-Type Suspension Parameter Measurement Device” SAE Paper 920049
- Dixon J. C. “Noise Reduction Design Features of the Peugeot 404” 1962
- Nedley A. L. Wilson W. J. “A New Laboratory Facility for Measuring Vehicle Parameters Affecting Understeer and Brake Steer” SAE Paper 720473
- Ellis J. R. Sharp R. S. “Measurement of Vehicle Characteristics for Ride and Handling” Symposium on Instrumentation and Test Techniques for Motor Vehicles The Institution of Mechanical Engineers, Proceedings 1967-68 182 July 4-5 1967
- Basso G. L. “Functional Derivation of Vehicle Parameters for Dynamic Studies” National Research Council of Canada 1974
- Basso G. L. “A Methodology for Measurement of Vehicle Parameters used in Dynamic Studies” National Aeronautical Establishment National Research Council Canada July 1973
- Ellis J. R. “The Design of a Suspension Parameter Measurement Device” SAE Paper 870567
- Coovert D. A. Chen H. F. Guenther D. A. “Design and Operation of a New Type Suspension Parameter Measurement Device” SAE Paper 920048
- Chrstos J. P. Heydinger G. J. “Suspension Parameter Measurement Needs Evaluation” 1991
- Whitehead J. P. “The Essential Contribution of Rig Measurement to Suspension Design and Development” IMechE Seminar Publication 1996-97
- Best A. Neads S. Witehead J. P. Willows I. R. “Design and Operation of a New Vehicle Suspension Kinematics and Compliance Facility” IMechE Seminar Publication 1997-8
- Chrstos J. P. “Simulation Evaluation Using the Side Pull Test” The Ohio State University
- Chrstos J. P. Guenther D. A. “Simulation Evaluation Using the Side-Pull Test” Institute of Mechanical Engineers 1993
- Nalecz A. G. “Development and Validation of Light Vehicle Dynamics Simulation (LVDS)” SAE Paper 920056
- Garrott W. R. Heydinger G. J. “An Investigation, Via Simulation, of Vehicle Characteristics that Contribute to Steering Maneuver Induced Rollover” SAE Paper 920585
- Allen R. W. Rosenthal T. J. Chrstos J. P. “Applying Vehicle Dynamics Analysis and Visualization to Roadway and Roadside Studies” System Technology Inc. 1998
- Allen R. W. Szostak H. T. et al. “Vehicle Dynamic Stability and Rollover” June 1992
- Levent Erdogan “Suspension Parameter Measurement Using Side-Pull Test To Enhance Modeling of Vehicle Roll” The Ohio State University 1999