Identifying nonlinear characteristics of model-free MR dampers in structures with partial response data
Magnetorheological damper(MR damper)have become an indispensable protection device for reducing structural vibration.Especially for unexpected earthquakes and multidimensional vibration,damper are used in the structures to absorb the unexpected seismic energy.However the dynamic performance of the MR damper is very complex,and has the characteristics of high nonlinear and unpredictability.The performance of MR damper is studied extensively by researchers.Some parameterized mathematical models are developed,but these models are simplified approximation model,cannot directly reflect the inverse dynamic characteristics of MR damper.Therefore,it is necessary to develop the identification of nonlinear characteristics of model-free MR damper based on measurement of structural dynamic response.In this paper,a two-step algorithm is proposed to identify the nonlinearities of model-free MR damper in structures using only partial measurements of structural dynamic responses.Simulation results demonstrate that the proposed algorithms are capable of identifying the nonlinear properties of structure with good accuracy.
Identification of nonlinearities MR damper model-free EKF KF-UI
X.J.Yang H.Su L.J.Liu
Department of Civil Engineering,Xiamen University,Xiamen,China
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
2801-2802
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）