在布洛克岛风电场的外套支持海上风力轮机的疲劳分析
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Updated: Jun 25, 2025

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Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
Published on: January 30, 2019
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Nasim Partovi-Mehr1, John DeFrancisci1, Mohsen Minaeijavid1
1Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA.
Sensors (Basel, Switzerland)
|May 25, 2024
概括
本研究评估了海上风力轮机支结构的疲劳寿命. 克腿的疲劳损伤率低于40%,表明使用寿命比塔底热点更长.
科学领域:
- 工程 工程师 工程师 工程师
- 可再生能源可再生能源是可再生能源.
- 结构分析 结构分析
背景情况:
- 海上风力轮机 (OWT) 支持结构面临风,波浪和叶片旋转的持续循环动态负荷.
- 这些负荷可以导致疲劳极限状态,显著影响结构设计和寿命.
- 评估剩余的疲劳寿命对于OWT的运行安全和寿命至关重要.
研究的目的:
- 评估Block Island风电场 (BIWF) 的GE Haliade 6MW海上风力轮机固定底外套支结构的剩余疲劳寿命.
- 用应力时间历史来比较塔和外套部件的疲劳损伤.
- 用先进的建模技术,验证非仪器化地点的应力估计.
主要方法:
- 利用两个经过验证的有限元模型来分析OWT支结构中的压力周期.
- 采用模态扩张方法来估计非仪器化位置 (虚拟传感器) 的压力.
- 在虚拟传感器位置应用简化静态方法进行比较应力计算.
主要成果:
- 塔底的热点与外套结构相比,具有更长的使用寿命.
- 发现克腿关节的疲劳损伤在25年的设计寿命中不到其疲劳能力的20% (模态扩张) 和40% (简化静态方法).
- 这两种方法都表明,外套结构不太可能在设计寿命内达到其疲劳极限.
结论:
- BIWF OWT的外套支结构具有相当大的剩余疲劳寿命.
- 塔楼底部的热点代表了关键区域,由于服务寿命较短,需要仔细监控.
- 使用的方法为评估海上风力轮机结构的疲劳寿命提供了可靠的估计.
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