| 非线性管土耦合条件下悬跨管道涡激振动响应时域预报 |
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| 引用本文： | 艾尚茂,孙丽萍. 非线性管土耦合条件下悬跨管道涡激振动响应时域预报[J]. 船舶力学, 2010, 14(11): 1297-1303. DOI: 10.3969/j.issn.1007-7294.2010.11.014 |
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| 作者姓名： | 艾尚茂 孙丽萍 |
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| 作者单位： | 哈尔滨工程大学船舶工程学院,哈尔滨,150001;哈尔滨工程大学船舶工程学院,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金，国家111工程项目 |
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| 摘 要： | 海底悬跨管道与海床耦合呈现高度非线性,使得发展一种时域预报方法成为需要.文章运用有限元法对输液张紧悬跨管道进行空间离散,并应用Facchinetti等改进的尾流振子模型和切片假定模拟每个有限单元上的涡激振动水动力,发展了一种悬跨管道-海床-流场多场耦合的非线性时域预报方法.在合理选取尾流振子模型附加水动力阻尼参数的基础上,时域预报了线性、理想塑性和张力截断弹簧模型下悬跨管道的涡激振动响应.研究结果表明,基于尾流振子的时域预报方法能够合理地描述非线性管土耦合边界下VIV响应;非线性边界条件下,锁定产生的最大响应幅值低于线性结果.
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| 关 键 词： | 悬跨管道 涡激振动 非线性管土耦合 尾流振子 时域 |
Time domain analysis of the free spanning pipeline VIV response under nonlinear pipe-soil interaction |
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| AI Shang-mao,SUN Li-ping. Time domain analysis of the free spanning pipeline VIV response under nonlinear pipe-soil interaction[J]. Journal of Ship Mechanics, 2010, 14(11): 1297-1303. DOI: 10.3969/j.issn.1007-7294.2010.11.014 |
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| Authors: | AI Shang-mao SUN Li-ping |
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| Affiliation: | AI Shang-mao,SUN Li-ping(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | Improving the knowledge about the effect of pipe-seabed-interaction nonlinearity on VIV of free spanning pipeline requires a time domain method.In this study,a time domain VIV response analysis method for non-linear pipe-seabed-current interaction analysis of free spanning pipelines was developed.The free spanning pipeline is discretized into finite elements,while the hydrodynamic force on every element is modeled by some strips described by a wake oscillator,which is developed by Facchinetti et al.After th... |
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| Keywords: | free spanning pipeline vortex induced vibration(VIV) nonlinear pipe-soil interaction wake oscillator time domain |
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