Vibrations is an extremely important issue to consider when designing various systems. It may lead to discomfort and malfunction or in some cases collapse of structures. To compensate for these vibrations different types of damping devices can be applied. The main focus which the following work addresses has been to look at standard methodology which enables determining the hysteresis from defi...

Semi-active control devices have received significant attention in recent years because they offer the adaptability of active control devices without requiring the associated large power sources. Magnetorheological (MR) dampers are semi-active control devices that use MR fluids to produce controllable dampers. They potentially offer highly reliable operation and can be viewed as fail-safe in th...

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...

Conventional skyhook-based ON–OFF control switches the damping force on a vibration suppression target according to sign of product and relative velocities (which is called condition function). Here, we propose strategy that uses novel function for improved performance. The proposed formulated based theory forced with base excitation. Its effect upon semi-active performance investigated via num...

We explored vibrations of a single-degree of freedom oscillator with a magnetorheological damper subjected to kinematic excitations. Using fast and slow scales decoupling procedure we derived an effective damping coefficient in the limit of high frequency excitation. Damping characteristics, as functions of velocity, change considerably especially by terminating the singular non-smoothness poin...

Building structures are vulnerable to the shocks caused by earthquakes. Buildings that have been destroyed an earthquake very detrimental in terms of material loss and mental trauma. However, technological developments now enable us anticipate from earthquakes minimize losses. One technologies has used, is currently being further developed, a damping device fitted building structure. There vari...

This paper presents a semi-active strategy for seismic protection of a benchmark cable-stayed bridge with consideration of multiple-support excitations. In this control strategy, Magnetorheological (MR) dampers are proposed as control devices, a LQG-clipped-optimal control algorithm is employed. An active control strategy, shown in previous researches to perform well at controlling the benchmar...