Abstract

In previous reports, a new seismic fatigue evaluation method based on the vibration velocity was proposed. In this study, the cumulative fatigue damage was evaluated by the rain flow method as well as the new method for the case where the seismic input acts on the cantilever pipe with the concentrated mass at the tip. When the cumurative fatigue damage was relatively large, both results were shown to be in good agreement, especially at the peak values of the response spectra. It was shown that quantitative fatigue evaluation is possible using the new method.

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