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Tuesday, July 9 • 16:10 - 16:30
DESIGN ANALYSIS OF EDDY CURRENT BASED DAMPERS

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When the magnetic flux is changed due to the motion of conductor within the applied magnetic field, eddy currents are generated in the conductor, which introduce their own magnetic field opposing in the nature of the applied magnetic field. This opposite magnetic field tries to overcome the change in magnetic flux. Using this concept an Eddy Current Damper is developed in which the conductor is a copper tube and magnetic field is generated by electromagnets of various dimensions. This damper is hybrid in nature as the damping effect is considered because of electromagnets as well as that of springs. This damper can be used to provide non- contact damping effects that will be advantageous for avoiding extra mass, friction and stiffness. This damper is tested on the Damping-testing machine and results so obtained are found in good agreement with those available in the literature. There are several different methods of inducing a time-varying magnetic field, and from each method arises the potential for a different type of damping system. Therefore, the research into eddy current and magnetic damping mechanisms have led to a diverse range of dampers, the factor which effects the magnetic field in eddy current based damper which is detailed discussed in this paper.


Tuesday July 9, 2019 16:10 - 16:30 EDT
Westmount 6
  T02 Act. noise & vib. cntrl., RS03 Semi-active control