Modeling of an Attenuation Characteristics of the Damper Used for Micro Vibration of a Car Body (Second Report)

- Characteristics of Damping Force under Dynamic Conditions -

Abstract

The test damper developed for a micro vibration suppression of a car body can produce a velocity-independence nearly constant damping force in a very small velocity range. Previous report elucidated the generation mechanism of damping force in quasi-static state. In this paper, firstly the attenuation model is enhanced to estimate damping characteristics of the test damper more precisely in dynamic state by introducing the time-delay elements into the previous model. Then the validity of modeling of damping mechanism is verified on the basis of comparison of simulations with experiments. Finally it is concluded clearly that the modified model can simulate the characteristics of damping force vs piston speed more precisely.