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Title Transcription
二 ジユウド ケイ 二 タイスル 二 ジユウド フラムダンパ ノ シンドウ ヨクセイ ノ トクセイ
Title Alternative
Characteristics of vibration suppression of two DOF Frahm damper for two DOF system
Author
濱本 明日香
Description
Frahm damper is the dynamic absorber without damping. This damper suppresses vibration in some range of excitation frequency using anti-resonance point of frequency response function. In this study, two DOF Frahm damper attached to two DOF system is investigated. Two combinations of the stiffnesses of two DOF Frahm damper for desired natural frequencies are obtained. The frequency response functions of the dampers alone show that these dampers have same resonance frequency and different anti-resonance frequency. In the point of vibration suppression, these dampers have same ability near the 1st natural frequency, but different characteristic near the 2nd natural frequency is observed. The damper with better performance suppresses vibration as well as two traditional Frahm dampers. To investigate the difference in the performance of the dampers, mode vectors are illustrated. In the mode vectors of the dampers alone, mode localization is observed in only one of the damper, which is effective in vibration suppression near the 2nd natural frequency. In the mode vectors of whole system, the components corresponding to the main system have almost same values. But the components corresponding to the damper has same characteristics of mode vectors of damper alone. The mode localization is observed in the two traditional Frahm dampers.
Subject
Dynamic absorber
Two DOF Frahm damper
Forced vibration
Frequency response function
Mode vector
Mode localization
Journal Title
Transactions of the JSME (in Japanese)
Volume
81
Issue
824
ISSN
2187-9761
Published Date
2013
DOI
Publisher
一般社団法人日本機械学会
Publisher Transcription
イッパン シャダン ホウジン ニホン キカイ ガッカイ
NII Type
Journal Article
Format
PDF
Rights
© 2015 一般社団法人日本機械学会
Text Version
著者版
Gyoseki ID
e25368
OAI-PMH Set
Faculty of Science and Engineering