摘要
为了实现某大型水平轴风力机塔筒底部门洞的抗极限与疲劳强度设计,基于热点应力法,建立塔筒门洞的有限元模型,并应用疲劳分析软件,分析计算得到门洞焊趾处的极限与疲劳强度。在此基础上,考察门洞结构参数如门框宽度、门框长度、塔筒壁厚对焊趾疲劳损伤的影响,并给出相应的结构优化方案。结果表明,所提出的方法在大型水平轴风力机塔筒门洞设计上具有可行性和有效性。
In order to realize the resistance to limit and fatigue strength design for door in the bottom of turbine tower of large-scale horizontal axis wind turbine, the finite element model of the door was established based on hot spot stress method. The ultimate and fatigue strength for the weld toe near the door were obtained with the application of the fatigue analysis software. The effects of some structural parameters such as frame width, frame length and thickness of tower wall on the fatigue damage were studied. Some optimal structures for the door were presented. The results show that the presented method is feasible and effective for the door design in large-scale horizontal axis wind turbine tower.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第6期1065-1069,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(11202078
51205023)
北京市自然科学基金(3143025)
工程车辆轻量化与可靠性技术湖南省高校重点实验室(长沙理工大学)开放基金(2013KJJ01)
中央高校基本科研业务费专项资金(2014ZD16)
