Finite Element Analysis of Forced Vibration for a Pipe Conveying Harmonically Pulsating Fluid
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概要
- 論文の詳細を見る
It is well known that the natural frequencies of a pipe become lower as uniform internal fluid velocity increases. The pipe becomes unstable if the fluid is faster than the critical velocity. But in the case of a pipe conveying harmonically pulsating fluid, resonances will occur even though the mean velocity of the fluid is below the critical velocity. Therefore, for improved analysis, the effects of pulsating fluid in the pipe should also be taken into consideration. In this study, a finite element formulation for the pipe was carried out while taking into consideration the effects of the fluid pulsating harmonically in the pipe. The damping and stiffness matrices in the finite element equation vary with time. A stability analysis based on the Bolotin method was carried out. And, a method to directly estimate the forced response of the pipe that does not need to solve a time data from time-variant system is presented. Several numerical examples are given in this paper that validate of this method.
- 一般社団法人日本機械学会の論文
- 2005-12-15
著者
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Jeong Weui
Department Of Mechanical Engineering Pusan National University
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Seo Young
Department Of Dermatology And Pathology College Of Medicine Hallym University
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Oh Jun
Department Of Mechanical Engineering Pusan National University
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Yoo Wan
Department Of Mechanical Engineering Pusan National University
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Seo Young
Department Of Mechanical Engineering Pusan National University
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Jeong Weui
Tokyo Institute Of Technology
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Jeong Seok
Maritime Research Institute
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JEONG Seok
Department of Laboratory Medicine College of Medicine, Kosin University
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Seo Young
Department Of Biology Yonsei University
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Jeong Seok
Department Of Chemistry And The Research Institute For Natural Science Hanyang University
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Seo Young
Department Of Biology College Of Science Yonsei University
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Oh Jun
Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
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Seo Young
Department of Avionics, Korea Aerospace University
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