| 输流管的参数共振及共振响应的数值模拟与分析 |
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| 引用本文： | 金基铎,宋志勇.输流管的参数共振及共振响应的数值模拟与分析[J].沈阳航空工业学院学报,2003,20(1):1-4. |
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| 作者姓名： | 金基铎 宋志勇 |
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| 作者单位： | 1. 沈阳航空工业学院工程力学系,辽宁,沈阳,110034
2. 沈阳航空工业学院研究生部,辽宁,沈阳,110034 |
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| 摘 要： | 研究了两端铰支输流管道在脉动内流作用下的参数共振问题。用数值方法分析了各种参数共振的响应曲线，其存在区域以及响应频率与脉动流频率之间的关系。研究结果发现，组合共振区域内发生两种不同的拟周期运动和组合周期运动。而且第一振型次谐波共振曲线延伸到组合共振区域。因此，在同一脉动频率下存在可发生多种不同运动的参数区域。
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| 关 键 词： | 两端铰支 输流管 参数共振 共振响应 数值模拟 脉动流 稳定性 |
| 文章编号： | 1007-1385(2003)01-0001-04 |
| 修稿时间： | 2002年1月20日 |
Parametric resonances of a pipe conveying fluid and their numerical simulations |
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| JIN Jiduo,SONG Zhiyong.Parametric resonances of a pipe conveying fluid and their numerical simulations[J].Journal of Shenyang Institute of Aeronautical Engineering,2003,20(1):1-4. |
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| Authors: | JIN Jiduo SONG Zhiyong |
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| Abstract: | This paper deals with the stability and parametric resonances of a pinned-pinned pipe conveying pulsating fluid.The amplitude-frequency response curves and the frequency properties of the parametric resonances are analyzed using numerical method.The results obtained show that several motions may occur in the region of combination resonance,including two kinds of quasi-periodic vibrations and combined periodic motion.Since the subharmonic resonance curve of the first mode extends as far as the region of combination resonance,there are some parameter regions in which several motions including the first mode subharmonic vibration,quasi-periodic vibration and combined periodic motion may occur corresponding to the same frequency of the pulsating flow. |
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| Keywords: | pinned-pinned pipe stability parametric resonance pulsating fluid |
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