摘要
对MW级风力发电机塔筒顶部法兰的疲劳损伤进行研究,运用有限元分析软件MSC.Marc/Mentat建立塔顶法兰连接系统有限元模型,对塔顶法兰疲劳应力进行了分析,利用Bladed软件实现了对法兰疲劳工况的载荷仿真,并结合雨流计数法获取法兰疲劳载荷谱,最后运用疲劳分析软件MSC.Fatigue和Palmgren-Miner线性累积损伤理论实现了对塔筒顶部法兰的疲劳分析。结果表明,该分析方法有效实用,为大型风力发电机法兰的疲劳分析提供了一条新思路,具有一定的工程实用价值。
The fatigue damage of MW wind turbine top flange was studied. By using the finite element analysis software MSC.Marc/Mentat, the finite element model of the top flange connection system was built up to analyze the top flange fatigue strain; by using bladed soft-ware, the load simulation of the flange fatigue working condition was carried out, and combining with rain flow circulation count method, the flange fatigue load spectrum was acquired. Finally, the top flange fatigue analysis was achieved by fatigue analysis software MSC, fatigue and palmgren-miner linear accumulation damage theory. The results indicate that the analysis method in the research is effective and practical, in which the result can provide one new idea for the fatigue analysis of large wind turbine flange. The method can possess some practical significances in engineering.
出处
《热加工工艺》
CSCD
北大核心
2013年第10期67-70,共4页
Hot Working Technology
基金
国家科技支撑计划项目(2009BAA22B02)
重庆市自然科学基金项目(CSTC2009BB0356)
