254 高流速配管合流部における流動励起振動の検討

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概要

• 論文の詳細を見る

• In the process plant, random vibration excited by the turbulence generated at Tee connection may cause fatigue failures. In general, the beam mode piping vibration is known to be excited when the piping is subjected to the severe turbulent conditions. However, shell mode piping vibration may cause the problem when the piping stiffness for circumferential direction is low. In this study, a new evaluation index to evaluate the integrity of the piping system against flow induced random vibration is proposed based on the excitation force of the fluid and the mechanical properties of the piping structure. Experiment and numerical analysis were executed in order to evaluate the validity of the new evaluation index. As a result, it was confirmed that the new evaluation index is proportional to the shell mode stress of the random vibration and then, the proposed index is effective.

• 一般社団法人日本機械学会の論文
• 2011-09-05

著者

• 西口 誠人

  千代田AS

• 林 慈朗

  千代田AS

• 井土 久雄

  千代田AS

関連論文

• 123 小型軸流ファンの音質評価に関する研究(音色・音質の評価・設計(2),騒音・振動評価・改善技術)
• 254 高流速配管合流部における流動励起振動の検討
• 254 高流速配管合流部における流動励起振動の検討(流体構造連成振動のメカニズムと計測制御,OS-22 流体関連振動・音響のメカニズムと計測制御,総合テーマ:「部門創設25周年、新たなる躍動」)

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