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This analytical model compares ride performance and roll stability in interconnected versus traditional suspensions, suggesting improvements through design.
A hydro-pneumatic vehicle suspension comprising hydraulic struts interconnected in the roll plane is analytically modeled to investigate its roll and ride performance characteristics. The fundamental properties of the interconnected suspension are computed and compared to those of the unconnected suspensions with and without anti-roll bars, in terms of suspension rate, roll stiffness and damping characteristics. The anti-roll performance characteristics of the interconnected suspension are analyzed for lateral acceleration excitations encountered during directional maneuvers. The ride quality performance is evaluated for excitations arising at the tire-road interface. It is concluded that the interconnected hydro-pneumatic suspension with inherent roll stiffness and damping characteristics yields improved roll stability of the vehicle. The ride performance characteristics of the interconnected suspension can also be improved through variable damping mechanisms.
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Liu et al. (1995) studied this question.
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