Abstract
Based on the dynamics theory and the negative stiffness structure (NSS), the new design of the driver's seat suspension of the cab or vehicle added by the NSS is proposed to enhance the isolation performance of the driver's ride suspension. To design the driver's seat suspension added by the NSS, the dynamic models of the NSS and driver's seat suspension are then established to calculate the vibration equations. The influence of the design parameters of the NSS and driver's seat suspension on the isolation performance of the driver's seat suspension is simulated and analyzed based on the dimensionless characteristic of the restoring force and displacement of the driver's seat suspension system. The research results show that the dimensionless characteristic of the restoring force and displacement of the driver's seat suspension added by the NSS is greatly affected by the geometrical ratios (1 and 2) and stiffness ratio () of the NSS. To improve the ride comfort of the driver's seat, the ratios of 1 = 0.6, 2 = 1.2, and = 0.6 should be applied for the design process of the driver's seat suspension equipped with the NSS.
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