Summary |
Taiwan is located in the Ring of Fire, the earthquake occurred frequently. The current passive control system, only in accordance with the seismic design requirements to provide a single design damping coefficient, could not fully meet the structure in a variety of seismic performance requirements. Although the current active control system can be input plus energy, in time to change the physical parameters of the damper to accurately control the behavior of the structure. But it needs to consume huge amounts of energies; high cost does not meet the economic benefits. The smart viscous dampers using interactions between nano-particles with their cluster effect and polymer fluid with their molecular chains, the fluid will change their viscosity with different shear rates and behave the shear thickening and thinning phenomenon, becoming shear thicking/thinning fluid. The fluid is filled in a simple damper structure to reach the characteristics of nonlinear damper, and meet the seismic demand for building and bridge structures. |