Abstract
By special designing of two magnetic gaps, made by two pole pieces attached to a ring-shaped magnet and an axi-symmetric inner magnetic yoke, the authors could make a very simple and cheap magnetic damper effective for five axes. The two magnetic gaps have conical shapes which are effective not only for radial two axes vibration but also for axial one. The magnetic attractive forces in the gaps are counteracted by sandwiched gum sheets which also have damping effects. The effectiveness of the damper excluded the gam sheets part is shown by several experiments in which the magnet is included or excluded. A very simple graphical model for each axis which explains damping force due to a.c. magnetic flux generated by vibration was shown.
