Comparison of the Performance of 7-Post and 8-Post Dynamic Shaker Rigs for Vehicle Dynamics Studies 2008-01-2966
This paper documents a simple theoretical analysis and an experimental performance comparison of the advantages of an 8-post shaker rig relative to a conventional 7-post shaker rig. A simple static model describing the chassis roll and warp characteristics is first presented to illustrate the differences between 7-post and 8-post configurations, and the conditions where an additional aeroloader provides an advantage. Using a late model NASCAR Sprint Cup car, a series of experimental tests were conducted with the 8-post shaker rig at the Virginia Institute for Performance Engineering and Research (VIPER) facility in both 7-post and 8-post configurations. Experimental results confirm the hypothesis that an 8-post configuration is able to more accurately reproduce target motions of the chassis and suspension when those motions include a chassis warp condition.
Citation: Southward, S. and Boggs, C., "Comparison of the Performance of 7-Post and 8-Post Dynamic Shaker Rigs for Vehicle Dynamics Studies," SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):1319-1324, 2009, https://doi.org/10.4271/2008-01-2966. Download Citation
Author(s):
Steve C. Southward, Christopher M. Boggs
Also in:
SAE International Journal of Passenger Cars - Mechanical Systems-V117-6EJ, SAE International Journal of Passenger Cars - Mechanical Systems-V117-6
Related Topics:
Vehicle dynamics /flight dynamics
Test equipment and instrumentation
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