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Test Rig for Characterization of Automotive Suspension Systems
ISSN: 1946-3995, e-ISSN: 1946-4002
Published April 14, 2008 by SAE International in United States
Citation: Gobbi, M., Guarneri, P., Mastinu, G., and Rocca, G., "Test Rig for Characterization of Automotive Suspension Systems," SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):568-576, 2009, https://doi.org/10.4271/2008-01-0692.
A test rig (named RuotaVia) is presented for the in-door testing of road vehicle suspension systems. It is basically a drum (ϕ 2.6 m) providing a running surface for testing the dynamic performance of a single tire or suspension system (corner). The suspension system is instrumented for the measurement of the forces and the moments acting at each joint connecting the suspension to the car body. A new 6 axis load cell was designed and manufactured for this purpose. The accelerations in various locations of the system (wheel carrier, suspension arms, …) and the wheel centre displacements in the longitudinal and vertical directions are monitored. The effect of the dynamic interaction between the test rig and the suspension system is discussed in the paper. The direct measurement of the forces and moments at the suspension-chassis joints is still an effective way for understanding the vibration and harshness (VH) suspension performances. The proposed experimental set-up allows to perform accurate, repeatable and consistent measurements of the VH suspension behavior in the frequency range 0-70 Hz.