Simulation and experimental research on eddy current-magnetic hybrid device

Abstract

Abstract: In order to improve the damping performance of an eddy current tuned mass damper (TMD) while save the material cost a new eddy current-magnetic TMD (EMTMD) is proposed by combining eddy current TMD with a magnetic TMD. The working principle of EMTMD is introduced, followed by its design for a pedestrian bridge model. The eddy current damping coefficient and magnetic force damping coefficient are calculated by the experimental method, and the accuracy of the three-dimensional electromagnetic field finite element simulation, including both steady-state and transient analyses, is verified. Subsequently, the three main parameters affecting the two damping coefficient pairs are analyzed by using the verified finite element analysis method, and their influence law is obtained. The EMTMD is optimized according to its influence law.The optimized EMTMD was installed on the pedestrian bridge model for the vibration control test. The experimental results show that the EMTMD provides effective vibration control for the pedestrian bridge model, with superior damping performance compared to the traditional eddy current TMD.

Key words: vibration control, eddy current-magnetic damper, finite element method, damping coefficient

CLC Number:

TU352.1

ZHU Qian-kun, JIANG Hao-Wen. Simulation and experimental research on eddy current-magnetic hybrid device[J]. Journal of Lanzhou University of Technology, 2025, 51(1): 108-115.

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