Performance Optimization and Experimental Study of a New Cylindrical Eddy Current Damper
In order to effectively suppress vortex-induced vibration of steel pipe members of transmission towers,a new cylindrical eddy current damper based on eddy current principle was designed.Firstly,four magnetic circuit design schemes are proposed,the distribution of air gap density of static magnetic field is analyzed,and the influence of different schemes on damping coeffi-cient of damper is discussed by transient analysis method.Finally,the design configurations of four kinds of conductors are pro-posed and optimized.Aiming at the optimal configuration of the cylindrical eddy current damper,a test model of the new type of cylindrical eddy current damper was built under the excitation of harmonic load.The reliability of the simulation results was veri-fied by the comparison between the test and simulation results,and the damping coefficient tended to decrease with the increase of vibration frequency.A new cylindrical eddy current damper can provide reference for vortex-induced vibration reduction of trans-mission tube towers.
万方数据
维普
