Dynamics & Design Conference
Online ISSN : 2424-2993
2017
セッションID: 228
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地震時に配管系に作用する応力の固有振動数に対する依存性
*稲田 文夫酒井 理哉田村 伊知郎森田 良
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A simplified analysis was conducted, and it was explained that the response spectrum of the cumulative fatigue damage value of the cantilever pipe with concentrated mass attached to the tip markedly decreases with increasing natural frequency. In addition, the validity of the analysis was shown by response analysis using actual earthquake motions in the first part of this paper. By the way, in same case it is said that there are cases where the response to high frequency acceleration is a problem for the piping system at the earthquake. Therefore, using the above concept, it is shown that the response of the cumulative fatigue damage at the resonance frequency for the sinusoidal excitation can remarkably decreases with increasing the vibration frequency of the excitation acceleration in the second part of the paper.
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