Research on the strain of the blade of wind turbine under the load of Aerodynamic force centrifugal

• 作 者: WeiHai-jiao[1]WangJian-wen[2]MaJian-long[2]DongBo[1]
• 机 构: School of Energy & Power Engineering,Inner Mongolia University of Technology,Huhhot,InnerMongolia,Ch
• 出 处: 第八届中国(上海)国际风能展览会暨研讨会
• 发表日期: 2014年期

　　This paper discussed the strain of the blade of the wind turbine caused by the aerodynamic force,the centrifugal force and the coupling of the aerodynamic force and the centrifugal force using the finite element theory.The results showed that: The maximum strain was located in the root and radial 0.65 R of the blade under the aerodynamic force,and the strain in root was bigger than that in 0.65 R.The maximum strain was located in the root under the centrifugal force,the strain was decreased from root to tip.The strain was shown a similarity trend to the effect of the centrifugal force under the coupling of the aerodynamic force and the centrifugal force.And with the increasing of rotor speed,the strain was value was increase.The study also found that: the strain caused by the aerodynamic force may greater than that caused by the centrifugal force in low rotating speed.But with the increasing of rotating speed,the increasing value under the centrifugal force was far greater than that under the aerodynamic force.The strain value caused by the coupling of the aerodynamic force and the centrifugal force was not equal to the sum of the centrifugal force and aerodynamic force.