500 kN Large-scale MR Damper and Its Engineering Application
The crucial techniques, performance test, model parameters identification and engineering application of 500kN large-scale magneto-rheological (MR) damper which has the largest damping force in the world presently fabricated by Us are investigated in this paper. The crucial characteristics test of MR fluid, including maximum yield shear stress, sedimentation- proof stability and response time shows that the sedimentation-proof stability of MR fluid is confirmed to have achieved international advanced level, and the other two performance indexes satisfy the requirement for the design and application of large-scale MR damper. Meanwhile, several crucial techniques of 500kN large-scale MR damper, including inner disk spring accumulator, magnetic-flux leakage prevented design and leading wire protection are introduced. According to the performance test result of the MR damper, the modified Bingham model parameters of MR damper are identified by damping least square method, and the theoretical result agrees well with the experimental one. Finally, its engineering application on Tian Xingzhou Bridge which is the longest span highway and railway combined cable-stayed bridge in the world is presented. Research demonstrates that it is very important to prepare high-performance MR fluid and adopt the proposed crucial techniques for the fabrication of large-scale MR damper, and high-performance large- scale MR damper is the basis of engineering application.
MR damper Performance experiment Crucial technique Parameters identification Cable-stayed bridge
Weilian Qu Jia Liu Jianwei Tu Miao Run Haibing Chen
Hubei Key Lab of Roadway Bridge & Structure Engineering, Wuhan University of Technology, Wuhan, Chin State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Tec
国际会议
南京
英文
90-99
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）