基于共固化阻尼层结构的风力机叶片抑颤分析  

Flutter-suppressing analysis of wind turbine blades based on co-curing damping layer structure

作　　者：孙大刚[1] 李占龙[1] 韩斌慧[1,2] 章新[1] 王军[1] 

机构地区：[1]太原科技大学机械工程学院,太原030024 [2]中国煤炭科工集团太原研究院

出　　处：《振动与冲击》2013年第19期93-99,105,共8页Journal of Vibration and Shock

基　　金：山西省回国留学人员科研资助项目(2012-073);高等学校博士学科点专项科研基金(200801090001);太原科技大学校青年基金(20113015)

摘　　要：针对大型风力机叶片颤振的现状,提出阻尼叶片的概念,并基于能量法推导出阻尼叶片的结构损耗因子。以某2 500 kW风力机为工程应用实例,基于ONERA非线性气动模型对普通叶片和阻尼叶片分别在启动风速、额定风速、安全风速和极限风速下进行数值仿真对比。结果显示,4种风速下阻尼叶片的结构损耗因子分别为0.617、0.579、0.523和0.439,阻尼叶片较普通叶片抑颤效果明显提高。研究结果可为大型风力机叶片抑颤设计提供参考。To improve large wind turbine blades' flutter-suppressing capacity, a damped blade concept was proposed. Blades were covered using laminated composites with an embedded viscoelastic layer. The structural loss factor of damped blades was derived based on the energy method. A 2500 kW wind turbine was taken as an example, based on ONERA nonlinear aerodynamic theory, the dynamic responses of ordinary and damped blades under four conditions including starting wind speed, normal wind speed, safe wind speed and limit wind speed were simulated numerically and the results were compared each other. The results showed that the flutter-suppressing ability of damped blades is obviously higher than that of ordinary ones.

关 键 词：风力机 共固化 阻尼叶片 抑颤 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]