磁性ゴムを用いた拘束型制振材の制振特性

概要

論文の詳細を見る
Use of high grade damping materials is one of the effective methods to reduce vibration and noise, but the conventional damping materials have two weighty drawbacks, one is that it takes much labor to install, and the other is that it exhibits high damping performance at limited frequencies and temperatures. To overcome these drawbacks, we have developed a new type damping material Damping Material Applying Rubber Compounding Magnetic Powder (DRM). By compounding magnetic powder, DRM has not only a good work-ability but also enhanced damping abilities. As the result of experiments, the following properties are revealed. (1) The damping performance of DRM has a peak value on the magnetic attractive force. (2) The damping performance of DRM increases with a decrease in the ferrite content. (3) The damping performance of DRM increases with an increase in the vibratory amplitude while the conventional constraining type damping material has very little dependency on the vibratory amplitude. These properties are produced by the frictional loss generated between DRM and the vibrating body.
社団法人日本音響学会の論文