| Very High Cycle Fatigue Life of Free-Spanning Subsea Pipeline Subjected to Vortex-Induced Vibrations | |
Song QY(宋清源)1,2 ; Liu, Jun1,2; Gao FP(高福平)1,2
| |
| Corresponding Author | Gao, Fuping([email protected]) |
| Source Publication | JOURNAL OF MARINE SCIENCE AND ENGINEERING
 |
| 2024-09-01 | |
| Volume | 12Issue:9Pages:18 |
| Abstract | Free-spanning subsea pipelines subjected to vortex-induced vibrations (VIVs) are particularly prone to fatigue failure. Existing flume observations indicated that the VIVs of a near-bed cylinder may be triggered effectively in moderate shear flows. This may imply that the vibration cycles of a spanned pipeline could be up to tens of millions. As such, very high cycle fatigue (VHCF) can occur during engineering service. The free span length is a key parameter for determining the structural natural frequency and the corresponding reduced velocity (Vr). On the basis of the dimensionless vibration amplitude A/D-Vr curve and the recommended S-N curves for high-strength steel pipelines with cathodic protection under seawater environments, a prediction method is proposed for the fatigue life of a free span undergoing VIVs. A parametric study is then performed to evaluate the fatigue life of the spanned pipelines with a focus on VHCF. It is indicated that the minimum fatigue life emerges at certain flow with a moderate velocity for a given span length. With a further decrease or increase in the flow velocity, the fatigue life would be enhanced correspondingly, which could be within the VHCF regime. Such nonlinear variation of the fatigue life with the span length and the flow velocity is attributed to being involved in various VIV branches of the A/D-Vr curve. |
| Keyword | free-spanning pipeline vortex-induced vibration very high cycle fatigue pipeline-seabed interaction high-strength steel seawater environment |
| DOI | 10.3390/jmse12091556 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001323144600001 |
| WOS Keyword | STEEL WELDED-JOINTS ; CRACK INITIATION ; SUBMARINE PIPELINE ; CIRCULAR-CYLINDER ; BEARING STEEL ; MECHANISM ; CORROSION ; BEHAVIOR ; REGIME ; LENGTH |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Ocean ; Oceanography |
| Funding Project | National Natural Science Foundation of China ; [12061160463] ; [11825205] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Gao, Fuping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96881 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Song QY,Liu, Jun,Gao FP. Very High Cycle Fatigue Life of Free-Spanning Subsea Pipeline Subjected to Vortex-Induced Vibrations[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2024,12,9,:18.Rp_Au:Gao, Fuping |
| APA | 宋清源,Liu, Jun,&高福平.(2024).Very High Cycle Fatigue Life of Free-Spanning Subsea Pipeline Subjected to Vortex-Induced Vibrations.JOURNAL OF MARINE SCIENCE AND ENGINEERING,12(9),18. |
| MLA | 宋清源,et al."Very High Cycle Fatigue Life of Free-Spanning Subsea Pipeline Subjected to Vortex-Induced Vibrations".JOURNAL OF MARINE SCIENCE AND ENGINEERING 12.9(2024):18. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment