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首页> 外文会议>25th International Conference on Offshore Mechanics and Arctic Engineering 2006(OMAE2006) vol.4 >THE STATE-OF-THE-ART REVIEW OF RISERS' VIV FATIGUE
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THE STATE-OF-THE-ART REVIEW OF RISERS' VIV FATIGUE

机译：对上升者的疲劳寿命的最新审查

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As one of the most prominent one, Vortex Induced Vibration (VIV) can create serious fatigue damage in risers used by the offshore industry. In deep waters, where oil and gas exploration and production continue apace, VIV may make the largest contribution to overall riser fatigue damage. Extensive researches have been done to investigate VIV response of risers, and several methods have been proposed for the fatigue life estimation of these structures. This paper addresses some of the methods available in literature for VIV fatigue life estimation of risers, focusing on their main underlying assumptions. The main focus of the study is on the influence of direct action of current on the riser structure. It is observed that riser fatigue life is greatly dependent on different parameters, and any minor change in these parameters would significantly influence the predicted fatigue life. It is illustrated that the available approaches for analyzing VIV fatigue of risers mainly focus on the VIV portion of the task, and indeed less attention is paid to the actual fatigue life analysis using various models. The importance of reconsidering the fatigue damage as a priority when designing risers has been discussed in detail, and recommendations for the future direction of researches on VIV induced fatigue of risers have been proposed.
机译：作为最突出的技术之一，涡激振动（VIV）会对海上工业使用的立管造成严重的疲劳损伤。在油气勘探和生产持续快速发展的深水地区，VIV可能对立管整体疲劳损伤做出最大贡献。已经进行了广泛的研究以研究立管的VIV响应，并提出了几种方法来评估这些结构的疲劳寿命。本文介绍了一些有关立管VIV疲劳寿命估算的可用方法，重点是它们的基本假设。研究的主要重点是电流的直接作用对立管结构的影响。可以观察到冒口的疲劳寿命在很大程度上取决于不同的参数，这些参数的任何细微变化都会显着影响预计的疲劳寿命。可以看出，用于分析立管VIV疲劳的可用方法主要集中在任务的VIV部分，而实际上很少关注使用各种模型进行的实际疲劳寿命分析。详细讨论了在设计冒口时重新考虑疲劳损伤的重要性，并提出了有关VIV引起冒口疲劳的研究方向的建议。

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