The efficiency of a damper depends on the amount of energy dissipation during a typical cycle experienced by the damper. For viscous dampers this leads to substantial frequency dependence, and typically implies that optimal tuning of a passive viscous damper is valid only for a particular mode. In contrast the energy dissipated by a hysteretic damper is independent of frequency, but depends on the amplitude and also contains a stiffness component. The present paper presents a procedure for predicting the magnitude of the closed hysteresis loops and thereby the energy dissipation, and a procedure for on-line tuning of the damper properties for random response. The approach is illustrated for the bilinear elasto-plastic damper, where the optimal relation between yield level and displacement amplitude is derived.
|Title of host publication||Proceedings of the 5th computational Stochastic mechanics conference|
|Publication status||Published - 2006|
|Event||computational Stochastic mechanics conference - |
Duration: 1 Jan 2006 → …
Conference number: 5
|Conference||computational Stochastic mechanics conference|
|Period||01/01/2006 → …|