A physical model with 10 tunable valve parameters is presented that simulates the nonlinear dynamic and temperature-dependent behaviour of automotive shock absorbers. The temperature-dependent behaviour is explained through the oil viscosity which determines the internal pressure build-up. The dynamical effects are derived from the compressibility of oil, the compliance of the cylinder walls and the adiabatic compression of gas in the reserve chamber. The nonlinear characteristic is mainly due to the nonlinear pressure drop across the valve assembly as a function of flow. An empirical model is implemented to provide a smoothed transition at blow-off. The validity of the damper model is demonstrated by comparing simulations and experiments.
Physical characterization of nonlinear shock absorber dynamics
European Journal of Mechanical and Environmental Engineering ; 43 , 4 ; 181-188
1998
8 Seiten, 9 Bilder, 2 Tabellen, 16 Quellen
Aufsatz (Zeitschrift)
Englisch