Abstract
Damping mechanism of polymer material is introduced in this paper easily to understand for mechanical engineers. First, dynamical characteristics common to polymer materials are related. Second, mechanism of joint combination is presented which causes these characteristics. Third, physical properties of polymer in glass region and in rubber region are introduced. Forth, the reason why polymer reveals exceedingly high damping effectives is explained. Fifth, notice points for successive application of damping material to machines for decrease of their vibration are given.
