中文摘要：

针对风力机叶片动态应变分布规律特性，以NACA4415翼型叶片为模型进行了数值模拟，并与采用旋转遥测技术测试的该风力机叶片动态应变试验结果进行了对比分析。结果表明，数值模拟与试验结果趋势一致;在气动力作用下，风力机叶片的应变主要集中在叶片的中部略靠后的位置，其根部及叶尖附近的应变与中部相比较小，前缘部分的应变值与后缘部分相比较大，压力面应变值大于吸力面相应位置的应变值；在气动力的基础上施加重力和离心力后，叶根处应变值增加迅速，同时叶片中部应变值保持在较大的水平，主要是离心力和气动力共同作用所致。

英文摘要：

Based on wind turbine blade dynamic strain distribution characteristics,a numerical simulation of the NACA4415 airfoil blade model is carried out,the simulation result is analyzed and compared with same blade＇s experiment test result gotten by rotation telemetry. The result indicates that numerical simulation is the same as the experiment result. Under the effect of aerodynamic force, wind turbine blade strain concentrates mainly on central position of the blade back, strain on the root and near the tip of blade are smaller than that on the central, the strain value on the front part is bigger than that on the rear part, the strain value on pressure side is greater than that on suction side of relevant position. Adding gravity and centrifugal force on the aerodynamic force, the strain value of blade root increases rapidly, at the same time the strain values of the central blade keep in a large level, which is mainly caused by centrifugal force and aerodynamic force.