大型水平轴风力机塔筒涡激振动焊缝疲劳分析  

ANALYSIS OF FATIGUE DAMAGE OF TOWER OF LARGE SCALE HORIZONTAL AXIS WIND TURBINE BY WIND-INDUCED TRANSVERSE VIBRATION

作　　者：龙凯[1] 贾娇[2] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《太阳能学报》2015年第10期2455-2459,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(11202078);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(2013KFJJ01);中央高校基本科研业务费专项(2014ZD16)

摘　　要：为了实现大型水平轴风力机塔筒在涡激振动下的抗疲劳设计,提出综合GL 2010认证规范、德国标准等的校核方法。分析对比有限元法和GH Bladed软件下的塔筒动态固有特性结果。基于DIN 4133标准,分析得到涡激振动下的塔筒截面惯性力和附加弯矩。采用工程算法计算得到塔筒截面应力变程,推导涡激振动引起的疲劳损伤表达式。以某2.0 MW水平轴风力机塔筒为对象,计算不同方案下的疲劳损伤值,分析沿塔筒高度方向的损伤分布规律。为风力机塔筒涡激振动引发的疲劳损伤分析提供实用分析方法。In order to realize the fatigue strength design for tower of the large-scale horizontal axis wind turbine （HAWT）, the check method combining GL 2010 certification with German standard et al was proposed. The results of the dynamic natural characteristics of the tower based on finite element method and the software GH Bladed were compared. According to DIN 4133 standard, internal forces and additional moments from wind-induced transverse vibrations were obtained. The stress range of tower section was calculated by engineering algorithm. The expression of the fatigue damage caused by wind-induced transverse vibrations was induced. The fatigue damage values for different scenarios were calculated for a 2 MW wind turbine tower. The damage distribution along the height of the tower was analyzed. The work offers effective analysis method for the fatigue damage of tower of wind turbine by wind-induced transverse vibration.

关 键 词：风力机 塔筒 涡激振动 疲劳损伤 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]