Abstract
A new kind of magnetorheological damper(MRD) and its mechanical model are presented for semi-active control of structural seismic responses. The valve model of magnetorheological fluid is chosen as the design principle and the design parameters of MRD are offered. From the mechanical model, the relationship between the design parameters of MRD and its output efficiency is discussed. The application of MRD to control structural vibration under earthquake is illustrated by establishing a set of differential equations of motion and a semi-active control algorithm based on the theory of modern optimal control. For a three-story frame structure with MRD mounted on its first floor, the numerical analysis of the semi-active control of structural seismic responses under El-Centro, Taft and artificial waves is carried out respectively. The results indicate that using MRD and semi-active control algorithm can efficiently reduce the structural responses induced by earthquake.
| Original language | English |
|---|---|
| Pages (from-to) | 92-95 |
| Number of pages | 4 |
| Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
| Volume | 37 |
| Issue number | 1 |
| State | Published - Jan 2003 |
Keywords
- Frame structure
- Magnetorheological damper(MRD)
- Semi-active control strategy
- Structure vibration control