A non-linear model of an adjustable automotive damper is developed, which includes the compressibility of the ̄uid, trapped gas and expansion of the cylinder. The parameters for the model are selected by ®tting the model to experimentally obtained data from the damper. The model is shown to give an excellent representation of the damper under investigation. The performance of the damper model i...

the present article seek to investigate the function of elliptical steel damper function in steel frames seismic resisting. the elliptical damper is a kind of earthquake energy dissipater in structure which acts based on the steel yielding feature. thus, this damper in frame lateral displacement mechanism is expected to have a satisfying hysteretic behavior in terms of energy absorption is on a...

additional dampers are employed in order to decrease the dynamic response of structure against the earthquake and wind loading recently. in this study, two types of systems related to waste of inactive energy, i.e. frictional damper which is categorized in dampers dependent on movement and viscoelastic damper which is categorized in dampers dependent on velocity, in making steel structures resi...

Eccentric structures will have torsional vibrations subjected to earthquakes, which can accelerate the damage of structures, and even become main cause building collapse. Semi-active control systems equipped with multiple magnetorheological (MR) dampers been widely applied in structural vibration control. In this study, numerical models spatial eccentric MR were established, time history analys...

Abstract Magnetorheological (MR) dampers with bypass arrangements and combined annular-radial fluid flow channels have shown superior performance compared to conventional MR single annular/radial gaps. Achieving a higher controllable dynamic force range low off-state but high on-state damping is yet significant challenge for developing payload ground vehicle suspensions. This paper presents the...