121 拘束型磁性制振材による鋼鉄道橋の振動低減(サイレント工学III:騒音低減化手法)(OS.04 : サイレント工学)

概要

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To improve vibration damping properties and workability of installation onto steel vibrating objects such as railway steel bridges, the authors have developed a magnetic rubber damper with a constraining layer (MRDC), which consists of a constraining layer made of steel and a magnetic rubber layer. The damping property of MRDC is substantially actualized by the frictional loss which arises between the magnetic rubber layer and the steel object. An equation to calculate the decrease in the vibration acceleration level by attaching MRDC onto railway steel bridges has been derived based on the analysis of flexural vibration of plate with MRDC. Experimental results show that the calculated values of the decrease in the vibration acceleration level agreed well with the measured values obtained by 1/3 octave band analysis.
一般社団法人日本機械学会の論文
2001-08-03