Article(id=1241023038515368303, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1241023036892172648, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.11.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1708876800000, receivedDateStr=2024-02-26, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773812549474, onlineDateStr=2026-03-18, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773812549474, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773812549474, creator=13701087609, updateTime=1773812549474, updator=13701087609, issue=Issue{id=1241023036892172648, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='11', pageStart='1663', pageEnd='1826', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1773812549088, creator=13701087609, updateTime=1773812775651, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241023987245970093, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1241023036892172648, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241023987245970094, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1241023036892172648, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1768, endPage=1781, ext={EN=ArticleExt(id=1241023038813163889, articleId=1241023038515368303, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Multimode vibration characteristics of flexible pipes based on a mode decomposition technique, columnId=1241023038716694896, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanic, runingTitle=null, highlight=null, articleAbstract=
The multimode vibration characteristics associated with slender marine risers/pipes are widely seen in the case of complex marine environments. Firstly, by using a two-way fluid-structure interaction technique, numerical simulations were performed on the vortex-induced vibration of a flexible marine riser model subjected to shear and uniform flows. Secondly, based on the analysis of position-frequency-energy spectra, the multimode characterized vibration along the pipe span was investigated. Then, an empirical mode decomposition technique called FB-EMD, based on the Fourier transform and band-pass filter, was used to adaptively decompose the vibration data into some intrinsic mode functions. By analyzing the time-frequency characteristic information, the transient evolution characteristics of the vibration modes associated with the flexible riser model were then discovered. It is found that the phenomena of multimode vibration along the slender flexible pipes are quite common. With the increase of flow velocity, higher order vibration modes are continuously triggered, and with the energy transfer between modes, the apparent modes at different periods compete fiercely, often resulting in transient multimode coexistence. The time-frequency-energy Hilbert spectral analysis shows that the random and natural vibration modes caused by the combined effects of local vortex shedding and energy transfer from adjacent pipe sections are excited in a wide frequency band, and the energy of each dominant vibration mode is usually time-varying.
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在复杂的海洋载荷作用下,沿深海细长柔性管常出现多模态振动特征。文中首先采用双向流固耦合技术,实施了剪切流与均匀流作用下弹性管涡激振动的数值仿真。其次,利用位置-频率-能量谱分析方法,探讨了沿管轴向的多模态耦合振动响应。最后,使用一种全新的模态分解技术,对管体特定位置的振动响应信号进行自适应分解,由分解产生的固有模态函数分析振动过程的时频特征,进而获得弹性管振动模态的瞬态演变规律。研究发现:细长弹性管的多模态振动现象较为普遍;随着流速的增加,高阶振动模态不断被激发出,伴随着模态间的能量传递,各显性模态在不同时段竞争激烈,常出现瞬态共存现象。通过时间-频率-能量Hilbert谱分析发现,由局部旋涡脱落与临近管段振动能量传递共同引起的随机振动模态及固有振动模态在较宽的频带范围内发生,且各显性振动模态的能量通常都是时变的。
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陈正寿(1979-),男,博士,教授,通讯作者,E-mail:aaaczs@163.com。
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陈正寿(1979-),男,博士,教授,通讯作者,E-mail:aaaczs@163.com。
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Fluid domain and boundary conditions, figureFileSmall=N/QzQe9dHQ+6jXiNm0z7NQ==, figureFileBig=GUKhhOW49nC1KYrm+QAk8A==, tableContent=null), ArticleFig(id=1241766181770695655, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图1, caption=
流场计算域和边界条件, figureFileSmall=N/QzQe9dHQ+6jXiNm0z7NQ==, figureFileBig=GUKhhOW49nC1KYrm+QAk8A==, tableContent=null), ArticleFig(id=1241766181875553261, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.2, caption=
Setting of flow velocity, figureFileSmall=rWtFpVGOdPkAVddh9mPR6Q==, figureFileBig=paMGeRTja5NwSouIbHBzEw==, tableContent=null), ArticleFig(id=1241766181967827952, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图2, caption=
流速工况设定, figureFileSmall=rWtFpVGOdPkAVddh9mPR6Q==, figureFileBig=paMGeRTja5NwSouIbHBzEw==, tableContent=null), ArticleFig(id=1241766182068491251, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.3, caption=
Calculation grid of fluid domain, figureFileSmall=D0iLxXHOla6/PFl0xm9UMQ==, figureFileBig=PT03LIHv0xdP7h2AmZaPXQ==, tableContent=null), ArticleFig(id=1241766182139794422, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图3, caption=
流体域计算网格, figureFileSmall=D0iLxXHOla6/PFl0xm9UMQ==, figureFileBig=PT03LIHv0xdP7h2AmZaPXQ==, tableContent=null), ArticleFig(id=1241766182227874810, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.4, caption=
Calculation grid of solid domain, figureFileSmall=4skbJB+wO115N/NWN0nL4A==, figureFileBig=tOFwg2OaaFnHELMeBx59Xw==, tableContent=null), ArticleFig(id=1241766182307566590, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图4, caption=
固体域计算网格, figureFileSmall=4skbJB+wO115N/NWN0nL4A==, figureFileBig=tOFwg2OaaFnHELMeBx59Xw==, tableContent=null), ArticleFig(id=1241766182374674432, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.5, caption=
RMS values of A/D for cross-flow along the pipe span, figureFileSmall=mGk0UxBGaR9nAUtKQmYIxw==, figureFileBig=6sK7gl43kvDmwQZMOOWvkA==, tableContent=null), ArticleFig(id=1241766182504697860, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图5, caption=
沿管轴向的横流向响应无因次振幅A/D的均方根值, figureFileSmall=mGk0UxBGaR9nAUtKQmYIxw==, figureFileBig=6sK7gl43kvDmwQZMOOWvkA==, tableContent=null), ArticleFig(id=1241766182613749768, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.6, caption=
Envelope diagrams of time-averaged RMS value of A/D along pipe span corresponding to different shear and uniform flows, figureFileSmall=Tq6lMF5ciJhgeeTZReRLQA==, figureFileBig=OoUeFoyDsNjOk0JifGkADw==, tableContent=null), ArticleFig(id=1241766182722801676, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图6, caption=
不同剪切流与均匀流所对应的沿管轴时均RMS A/D值包络图, figureFileSmall=Tq6lMF5ciJhgeeTZReRLQA==, figureFileBig=OoUeFoyDsNjOk0JifGkADw==, tableContent=null), ArticleFig(id=1241766182798299152, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.7, caption=
PFE spectra in both IL and CF directions for the Case Vmax=0.3 m/s, figureFileSmall=9w05wPThEOA0VHrk8agyAA==, figureFileBig=vLfaH0ut3ZRDWc0EnfcTcQ==, tableContent=null), ArticleFig(id=1241766182898962452, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图7, caption=
剪切流速Vmax=0.3 m/s时顺流向与横流向的PFE谱, figureFileSmall=9w05wPThEOA0VHrk8agyAA==, figureFileBig=vLfaH0ut3ZRDWc0EnfcTcQ==, tableContent=null), ArticleFig(id=1241766182987042838, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.8, caption=
PFE spectra in both IL and CF directions for the Case Vuni=0.3 m/s, figureFileSmall=Hji+10Tn/Rd7MSLscsOzZw==, figureFileBig=CVzDYetHFCkCVcbPfP3ypQ==, tableContent=null), ArticleFig(id=1241766183083511833, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图8, caption=
均匀流速Vuni=0.3 m/s时顺流向与横流向的PFE谱, figureFileSmall=Hji+10Tn/Rd7MSLscsOzZw==, figureFileBig=CVzDYetHFCkCVcbPfP3ypQ==, tableContent=null), ArticleFig(id=1241766183179980828, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.9, caption=
PFE spectra in both IL and CF directions for the Case Vmax=0.5 m/s, figureFileSmall=6e3i1jEaYIVe5f4jDd/V8A==, figureFileBig=BX/D1UVtb4cJQhu02pmSwg==, tableContent=null), ArticleFig(id=1241766183272255520, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图9, caption=
剪切流速Vmax=0.5 m/s时顺流向与横流向的PFE谱, figureFileSmall=6e3i1jEaYIVe5f4jDd/V8A==, figureFileBig=BX/D1UVtb4cJQhu02pmSwg==, tableContent=null), ArticleFig(id=1241766183335170082, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.10, caption=
PFE spectra in both IL and CF directions for the Case Vuni=0.5 m/s, figureFileSmall=GqmsghsYolFqkG2bNc2brw==, figureFileBig=SVuC/FXtKrtrYHCIyFBXSw==, tableContent=null), ArticleFig(id=1241766183402278949, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图10, caption=
均匀流速Vuni=0.5 m/s时顺流向与横流向的PFE谱, figureFileSmall=GqmsghsYolFqkG2bNc2brw==, figureFileBig=SVuC/FXtKrtrYHCIyFBXSw==, tableContent=null), ArticleFig(id=1241766183465193512, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.11, caption=
PFE spectra in both IL and CF directions for the Case Vmax=0.7 m/s, figureFileSmall=h3tvl2OarmW7FVQI8Q7cgg==, figureFileBig=QzuHHlz84NkaRi6bIitVJg==, tableContent=null), ArticleFig(id=1241766183561662509, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图11, caption=
剪切流速Vmax=0.7 m/s时顺流向与横流向的PFE谱, figureFileSmall=h3tvl2OarmW7FVQI8Q7cgg==, figureFileBig=QzuHHlz84NkaRi6bIitVJg==, tableContent=null), ArticleFig(id=1241766183679103026, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.12, caption=
PFE spectra in both IL and CF directions for the Case Vuni=0.7 m/s, figureFileSmall=R/hCEElO/ei3CvnNlX0qfw==, figureFileBig=RacgMmwpPswoHtUrR/D1NQ==, tableContent=null), ArticleFig(id=1241766183767183412, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图12, caption=
均匀流速Vuni=0.7 m/s时顺流向与横流向的PFE谱, figureFileSmall=R/hCEElO/ei3CvnNlX0qfw==, figureFileBig=RacgMmwpPswoHtUrR/D1NQ==, tableContent=null), ArticleFig(id=1241766183855263798, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.13, caption=
TFE-Hilbert spectra related to different locations about IL and CF VIVs when Vmax=0.3 m/s, figureFileSmall=AQskzhEwsglBKZWN3Ls55w==, figureFileBig=+cTFQyDdOWuufUoC9Mlo8Q==, tableContent=null), ArticleFig(id=1241766183968510010, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图13, caption=
剪切流速Vmax=0.3 m/s时顺流向与横流向不同测点位置处的振动位移响应TFE-Hilbert谱, figureFileSmall=AQskzhEwsglBKZWN3Ls55w==, figureFileBig=+cTFQyDdOWuufUoC9Mlo8Q==, tableContent=null), ArticleFig(id=1241766184064979003, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.14, caption=
TFE-Hilbert spectra at different locations for IL and CF VIVs when Vuni=0.3 m/s, figureFileSmall=xSeGr1Nn5bk8avQAdfwJsQ==, figureFileBig=mlzPona0VK9R2xEKnOGnkA==, tableContent=null), ArticleFig(id=1241766184195002431, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图14, caption=
均匀流速Vuni=0.3 m/s时顺流向与横流向不同测点位置处的振动位移响应TFE-Hilbert谱, figureFileSmall=xSeGr1Nn5bk8avQAdfwJsQ==, figureFileBig=mlzPona0VK9R2xEKnOGnkA==, tableContent=null), ArticleFig(id=1241766184304054338, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Fig.15, caption=
TFE-Hilbert spectra related to y/L=8/16 about IL and CF VIVs when Vmax=0.7 m/s and Vuni=0.7 m/s, figureFileSmall=Zj4hNQczHha3vV9knwnSrA==, figureFileBig=1iVx+UfVdROdtGsitMmJDw==, tableContent=null), ArticleFig(id=1241766184413106246, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=图15, caption=
剪切流速Vmax=0.7 m/s与均匀流速Vuni=0.7 m/s时顺流向与横流向y/L=8/16测点的振动位移响应TFE-Hilbert谱, figureFileSmall=Zj4hNQczHha3vV9knwnSrA==, figureFileBig=1iVx+UfVdROdtGsitMmJDw==, tableContent=null), ArticleFig(id=1241766184505380937, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Tab.1, caption=
Key information about the pipe system
, figureFileSmall=null, figureFileBig=null, tableContent=
| 立管特征 | 数值 | 单位 |
|---|
| 管体长度,L | 16 | m |
| FRP管外径,D | 34.8 | mm |
| 抗弯刚度,EI | 575.6 | N·m2 |
| 顶张力,T | 981 | N |
| 质量比,m* | 0.82 | / |
| 结构阻尼,c | 2.34% | / |
), ArticleFig(id=1241766186032107596, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=表1, caption=
管模型参数表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 立管特征 | 数值 | 单位 |
|---|
| 管体长度,L | 16 | m |
| FRP管外径,D | 34.8 | mm |
| 抗弯刚度,EI | 575.6 | N·m2 |
| 顶张力,T | 981 | N |
| 质量比,m* | 0.82 | / |
| 结构阻尼,c | 2.34% | / |
), ArticleFig(id=1241766186115993680, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=EN, label=Tab.2, caption=
Test results associated with mesh independency
, figureFileSmall=null, figureFileBig=null, tableContent=
| 网格序号 | 控制参数 | 评判标准参数 |
|---|
| NC | ΔC/NC | CD_mean | CD_RMS | CL_RMS | fv |
|---|
| Mesh-1 | 60 | 0.001 82 | 1.642 | 1.644 | 0.972 | 3.749 |
| Mesh-2 | 120 | 0.000 91 | 1.736 | 1.751 | 0.944 | 3.644 |
| Mesh-3 | 180 | 0.000 61 | 1.787 | 1.791 | 1.026 | 3.621 |
| Mesh-4 | 240 | 0.000 45 | 1.804 | 1.816 | 1.031 | 3.596 |
), ArticleFig(id=1241766186208268369, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038515368303, language=CN, label=表2, caption=
网格无关性研究结果
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| 网格序号 | 控制参数 | 评判标准参数 |
|---|
| NC | ΔC/NC | CD_mean | CD_RMS | CL_RMS | fv |
|---|
| Mesh-1 | 60 | 0.001 82 | 1.642 | 1.644 | 0.972 | 3.749 |
| Mesh-2 | 120 | 0.000 91 | 1.736 | 1.751 | 0.944 | 3.644 |
| Mesh-3 | 180 | 0.000 61 | 1.787 | 1.791 | 1.026 | 3.621 |
| Mesh-4 | 240 | 0.000 45 | 1.804 | 1.816 | 1.031 | 3.596 |
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