叶尖小翼对3MW风力机叶片模态分析的影响  

IMPACT OF SMALL WING OF THE FLADE TO THE MODAL OF THE FLADE OF 3 WM WIND TURBINE

作　　者：武玉龙[1] 李春[1] 高伟[1] 叶舟[1] 吴攀[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《机械强度》2013年第6期864-868,共5页Journal of Mechanical Strength

基　　金：国家自然科学基金(E51176129);上海市研究生创新基金项目(JWCXSL1021)资助~~

摘　　要：作为风力机的重要部件,叶片为一容易发生振动的细长弹性体。叶尖小翼虽可增加风力机的输出功率,但必然对叶片结构强度产生影响。选定叶片的材料参数,应用Ansys软件对带小翼与不带小翼叶片进行模态分析,确定叶片结构的固有频率和振型等振动特性。并对各阶模态结果进行对比分析,得出在重力作用下叶尖小翼对风力机叶片模态特性的影响。结果表明,叶片叶尖加小翼虽然对叶片的模态特性产生一定影响,但不会发生共振,符合强度要求。As an important component of a wind turbine, the blade is a slender elastomer which is a vulnerable to vibration. Though the small wing of the blade could increase the output power of a wind turbine, it will have an impact to structure strength of the blade. Select rational choice of design parameters and apply the finite element analysis software Ansys to conduct modal analysis for the blade of a wind turbine which has a small wing or not. Then, ensure the vibration characteristics of the blade, such as various order modal shape, various order frequency and so on. Compare the results of each order modal analysis to obtain the impact of small wing of the blade with gravity to modal analysis. Though the small wing of the blade has some impact to modal analysis, resonance will not occur. The blade can achieve the required structure strength.

关 键 词：风力机 叶片 小翼 模态分析 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]