機器・配管系の減衰同定法の評価に関する研究 : 第2報, 振動試験データを用いた配管系の減衰比同定(<特集> ダンピング)

概要

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This paper describes examples of applying damping calculation methods to equipment vibration test data. The data used for the study are earthquake observation records obtained on a pipe at an actual plant, vibration test data of an actual plant pipe, and two test pipes. The applied damping calculation methods are two auto-regressive (AR) methods, the single-variable and the double-variable AR methods, one curve-fit method, and conventional methods (the half-power method and the logarithmic-decrement method). Particular attention was paid to the applicability of the two AR methods to these test data because the AR methods showed promising damping calculation capabilities through damping calculation simulation such as toughness in applicability and highly accurate damping calculation capability. The damping values in this study calculated by using different methods agree moderately well with each other. The single-variable AR method shows its effectiveness in application even for snapback test data.
一般社団法人日本機械学会の論文
1993-10-25