I‘m attempting to model a car suspension system and I‘m modeling the tires as a mass attached to the ground with a spring and a damper. What‘s a good value for the damping coefficient for a typical tire on a road? I came up with a stiffness value k of roughly 600 lbs/in with seems reasonable.
Well dropping a car a few is too difficult to perform. The easiest way is applying hand force and analyzing its harmonic motion IMO. Actually, the more accurate technique is to analyze the frequency response of the system (using Laplace).
Tire damping is quite small compared to the damping provided by the shock absorber. According to Milliken Milliken, 15% of critical damping is where the most comfort is achieved. Calculate Ccr (critical damping): Ccr 2*sqrt(k*m) A tire is likely to have a damping ratio of 0.03 (3% of critical damping), while the shock absorbers will be more like 0.15 to 0.45, depending on how sporty a car it is.
