Design of Passive Vehicle Suspensions for Maximal Least Damping Ratio

This paper studies the use of the least damping ratio among system poles as a performance metric in passive vehicle suspensions. Methods are developed which allow optimal solutions to be computed in terms of non-dimensional quantities in a quarter-car vehicle model. Solutions are provided in graphical form for convenient use across vehicle types. Three suspension arrangements are studied: the standard suspension involving a parallel spring and damper and two further suspension arrangements involving an inerter. The key parameters for the optimal solutions are the ratios of unsprung mass to sprung mass and suspension static stiffness to tire vertical stiffness. A discussion is provided of performance trends in terms of the key parameters. A comparison is made with the optimization of ride comfort and tire grip metrics for various vehicle types.


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  • Accession Number: 01603952
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 30 2016 3:00PM