대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제30권12호
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  • Pages.1588-1595
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  • 2006
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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조화유동을 갖는 직선 파이프의 매개변수공진 해석

Parametric and Combination Resonances of at Straight Pipe with Pulsatile Flow

  • 홍성철 (한라대학교 기계자동차공학부)
  • 발행 : 2006.12.01
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초록

The stabilities of a pinned-pinned straight pipe conveying fluid are investigated by complexification-averaging method. The flow is assumed to vary harmonically about a constant mean velocity. Instability conditions of a governing equation are analytically obtained about parametric primary, secondary and combination resonances. The resulted stability conditions show that instabilities exist when the frequency of flow fluctuation is close to one and two times the natural frequency or to the sum of any two natural frequencies. In case that the fluctuated flow frequency is close to the difference of two natural frequencies, instabilities does not exist.

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참고문헌

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