555 防振台に組み込む動吸振器の開発

概要

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This paper deals with development of tuned mass damper for vibration isolation table. Vibration isolation tables have several limitations on installation place because of their large weight. Recently, honeycomb structure has been introduced into the vibration isolation table in order to lightweight keeping stiffness high. However, if the honeycomb vibration isolation table has the experimental equipment including the vibration resource and the vibration frequency of the resource is identical with the natural frequency of the isolation table, resonance will be occurred between the resource and the table, and it makes large influence on the measurement accuracy. This study has been carried out in order to realize an optimum design to satisfy the requirements for vibration isolation table with high performance. Based on the finite element model by NASTRAN, the simulation were executed to estimate the influence to the natural frequencies and the compliance of the vibration isolation table by changing location and structure of Tuned mass dumper. The simulation results furnish basic data for tuned mass dumper of non-standardized vibration table and their adjustment. As a result, all tuned mass damper patterns could damp at the center and corner of the vibration isolation table. But Pattern 3 didn't obtain high vibration damping effect what is higher than other patterns.
一般社団法人日本機械学会の論文
2011-09-05