大功率风力发电机组塔顶法兰疲劳分析

基金项目:

国家科技支撑计划项目(2009BAA22B02)资助

Fatigue Analysis of High Power Level Wind Turbine Top Flange

1.
The State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400030

摘要: 基于风力机法兰有限元分析模型,对MW级风力机法兰疲劳损伤进行了研究。利用MSC.Marc/Mentat软件分析了风力发电机法兰的疲劳应力;运用雨流循环计数法计算了法兰的疲劳载荷谱。最后,提出了一种将雨流循环计数法与Palmgren-Miner线性累积损伤理论相结合的法兰疲劳损伤计算的方法,并根据GL规范修正了法兰材料的S-N曲线。分析结果表明:该方法是可靠实用的。
- 风力发电机 /
- 法兰 /
- 有限元法 /
- 疲劳载荷 /
- 疲劳分析
Abstract: The fatigue damage of high power level wind turbine top flange has been studied based on its finite element model.The fatigue stress was analyzed using the nonlinear finite element software MSC.Marc/Mentat,the fatigue load spectrum had also been calculated by the rain flow circulation counting method.A new method which combines the rain flow circulation count method with Palmgren-Miner linear cumulative damage law to calculate the fatigue damage of top flange was then proposed in the pesent study.In the fatigue damage analysis,the S-N curve of top flange material has been modified according to Germanischer Lloyd standard.The results indicate that the proposed method is feasible and relaiable,and it can provide a more accurate idea of fatigue analysis of wind turbine top flange.
- wind turbine /
- top flange /
- finite element method /
- fatigue load /
- fatigue analysis

[1]	董岚枫. 大型水轮机主轴锻造过程裂纹缺陷的预防[J].清华大学学报（自然科学版）,2008,(05):765768.
[2]	刘桦. 风电机组系统动力学模型及关键零部件优化研究[D].重庆:重庆大学,2009.
[3]	Germanlscher Lloyd WindEnergie GmbH. Guideline for the Certification of Wind Turbines[M].Germany,2010
[4]	王国军. MSC.Fatigue疲劳分析实例指导教程[M].北京:机械工业出版社,2009.
[5]	Passipoularidis V A,Philippidis T P,Brondsted P. Fatigue life prediction in composites using progressive damage modelling un-der block and spectrum loading[J].International Journal of Fatigue,2011,(02):132-144.
[6]	Panontin T L,Sheppard S D. Fatigue and Fracture Mechanics[M].America,American Society for Testing Material,1999.
[7]	肖建清,丁德馨,张萍. 改进三峰谷雨流计数法在爆破震动损伤评价中的应用[J].岩土力学,2009,(z1):244-249.
[8]	陈传尧. 疲劳与断裂[M].武汉:华中科技大学出版社,2002.
[9]	Khosrovanch A K,Dowling N E. Fatigue loading history recon-struction based on the rain-flow technique[J].International Journal of Fatigue,1990,(02):99-106.
[10]	盛汉桥. 转炉疲劳载荷谱的研究[J].固体力学学报,2008,(z1).
[11]	李天亮,邹仕军,孙冬. 飞机疲劳载荷谱分析的一种新方法[J].机械科学与技术,2006,(06).