A Vibration Transfer Reduction Technique, Making Use of the Directivity of the Force Transmitted from Road Surface to Tire

Paper #:
  • 2000-01-0096

Published:
  • 2000-03-06
Citation:
Minakawa, M., Nakahara, J., and Ninomiya, J., "A Vibration Transfer Reduction Technique, Making Use of the Directivity of the Force Transmitted from Road Surface to Tire," SAE Technical Paper 2000-01-0096, 2000, https://doi.org/10.4271/2000-01-0096.
Pages:
10
Abstract:
While there has been an empirical rule telling suspension designers that a slight rearward inclination of the wheel travel locus could improve ride harshness performance, there has not been any quantitative proof on it, to the extent of authors' knowledge. The authors planned to analyze the phenomenon by quantitatively measuring the force transmission via suspension, to find out that the amplitude of longitudinal force transmission to the sprung mass changes significantly depending on the above inclination angle.Further investigation has lead to a conclusion that the force transmission from ground to tire has a sharp directivity. And that the relationship between this direction and the direction of wheel travel is a dominant factor, which decides the magnitude of longitudinal force transmission to the sprung mass. In order to make use of the finding, the optimal wheel center locus inclination in side view has been studied, to minimize the longitudinal force transmission. The optimum angle has been confirmed to exist.
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