配管系(立体はり)の振動特性

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  • On a Dynamic Behavior of a Piping System
  • ハイカンケイ リッタイハリ ノ シンドウ トクセイ

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To secure reliable piping systems in nuclear power plants under a violent earthquake, the seismology in connection with piping works should be developed. For this purpose, it is necessary to study on the dynamic behavior of a piping system as a complicated beam. In this paper, the authors deal with vibration characteristics of a complicated but bear beam, effects of additional elements on the bear beam, simulation of vibration belonging to each mode of the beam to that of a single degree-of-freedom system and its steady-state response expressed as its displacement or bending moment to the harmonic input. After completing these analyses, the response of a complicated beam to a random input can be obtained by superposing the response of every corresponding single degree-of-freedom system on it.

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