摘要
要使风力机叶片的试验结果与数值模拟结果的偏差满足GL规范规定的相应要求,那么数值模型与叶片的实际试验状态相吻合是很关键的。一般应用有限元软件进行叶片结构分析时,边界条件为约束叶片根部,而实际在进行静力试验时,叶片是安装在轮毂上,轮毂再与支座固定在一起的,而轮毂并非刚体,因此模型中应考虑其对试验结果的影响。本文结合某大型水平轴风力机叶片的试验结果和数值模拟分析,证实了在叶片模型中加轮毂这种修正方法是有效的。
To make the deviation of the static test results and numerical simulation results meet the requirement of GL specification,the match of the station of numerical model and the static test is the key factor.Generally,when we do the blade structure analysis using finite element software,the boundary conditions are constraints on the blade root.However,in the static test,the blade is mounted on the wheel hub,where the hub and bearing are fixed together.And the hub is not rigid,so the model should consider its influence on the test results.This article takes MW blade as an example,compares the static test results and FEM calculation,and finally confirms the validity of this method.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2014年第8期41-43,共3页
Fiber Reinforced Plastics/Composites
基金
国家高技术研究发展计划(863计划)(2012AA051302)
国家科技支撑计划(2012BAA01B02)
关键词
风力机叶片
轮毂
模态分析
相似三角形
wind turbine blade
wheel
modal analysis
similar triangles
