RT Journal Article
SR Electronic
A1 Ferfecki, Petr
A1 Konečný, Marek
A1 Molčan, Michal
A1 Zapoměl, Jaroslav
T1 Numerical Simulation and Experimental Analysis of the Magnetic Damping Effect generated by a Moving Magnet
JF Manufacturing Technology Journal
YR 2020
VO 20
IS 6
SP 714
OP 719
DO 10.21062/mft.2020.114
UL https://journalmt.com/artkey/mft-202006-0017.php
AB Nowadays, to reduce vibrations of machines, damping devices utilize the eddy current damping ef-fect being increasingly investigated for its advantages of no mechanical contact, no viscous liquid required, high reliability, and good damping capacity. This article studied the main principle of the eddy current damping effect for a moving permanent magnet in a stationary and electrically conduc-tive nonmagnetic cylindrical tube. The magnetic damping coefficient is investigated experimentally, analytically, and by numerical simulations in a steady-state. The numerical simulation is performed in the ANSYS Maxwell programme. The obtained results indicate that the damping force affecting the moving magnet has a viscous form. The experimentally measured and computed results are in good agreement. The effect of varying tube diameter and the tube wall thickness on the magnetic damping coefficient is shown. The contribution of this article consists in the development and a comparison of the obtained results of three approaches for determining the magnetic damping coefficient for a mov-ing magnet in a cylindrical tube.