风力机叶片结构分析与铺层优化  

Structural Analysis and Layer Optimization of Wind Turbine Blades

作　　者：杨俊 武美萍 王称心 

机构地区：[1]江南大学机械工程学院,江苏无锡214122

出　　处：《新技术新工艺》2015年第3期75-78,共4页New Technology & New Process

摘　　要：根据玻璃钢风力机叶片结构分析的有限元理论,利用大型通用有限元软件ANSYS建立叶片的有限元模型。通过在风力、重力和离心力耦合作用下风力机叶片的静力学分析,检验叶片正常运行时的安全性。通过风力机叶片动力学分析,计算叶片的固有振动频率,判断其能否避免共振,实现正常运行。在此基础上,根据Miner线性累积损伤法则的玻璃钢叶片疲劳寿命估计方法,对风力机叶片疲劳寿命进行计算,判断初始设计方案能否满足使用寿命要求。在不增加叶片质量的前提下,对叶片的铺层工艺进行优化,改善了叶片应力,提高了疲劳寿命。Based on finite element analysis （FEA） theory of GRP blade＇s structure, the FEM is founded with the large- scale common FEA soft-ANSYS. Through statics analysis in the coupling of wind, gravity and centrifugal force, the safety of wind turbine blades is checked out. Through dynamics analysis of wind turbine blades, calculated vibration frequency and checked out the condition of resonance. Based on the miner linear fatigue damage accumulation rule, the fatigue life of wind turbine blades was calculated. A layer optimization design was raised after the fatigue life prediction without increasing the weight of blades. After optimization, the stress and the fatigue life of wind turbine blades were improved.

关 键 词：风力机 玻璃钢叶片 静力学分析 动力学分析 铺层优化 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]