基于减缩模型的硬涂层-失谐整体叶盘动力学分析  

Dynamic Analysis of the Hard-Coating Mistuned Blisk Using ROM

作　　者：高峰[1,2] 孙伟 范云飞[1,2] GAO Feng;SUN Wei;FAN Yun-fei(School of Mechanical Engineering&Automation,Northeastern University,Shenyang 110819,China;Key Laboratory of Ministry of Education on Vibration and Its Control of Aerospace Power Equipment,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819 [2]东北大学航空动力装备振动及控制教育部重点实验室,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2018年第11期1624-1629,共6页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51775092);中央高校基本科研业务费专项资金资助项目(N170306002)

摘　　要：提出一种对叶片涂敷硬涂层的阻尼减振方法,并以涂敷NiCoCrAlY+YSZ硬涂层的失谐整体叶盘为实例进行有效性研究.首先,利用改进的固定界面子结构模态综合法对涂敷硬涂层的失谐整体叶盘的有限元模型进行减缩,并求解其振动特性.其次,研究了硬涂层对失谐整体叶盘振动特性的影响.最后,重点分析了硬涂层厚度对失谐整体叶盘阻尼性能的影响.结果表明,硬涂层对固有频率的影响微弱,但有较强的阻尼效应,能够显著抑制失谐整体叶盘的共振响应.A damping vibration reduction method with depositing hard coating on blades was proposed,and a mistuned blisk with NiCoCrAlY+YSZ hard coating deposited was taken as example for numerical calculation.Firstly,the reduced-order model(ROM)of the hard-coating mistuned blisk was established by the improved fixed interface component modal synthesis method(Fixed-ICMSM),then the vibration characteristics were calculated.Subsequently,the influences of hard coating were studied toward vibration characteristics of the mistuned blisk.Next,the influence of the coating thickness was studied particularly toward damping capacity of mistuned blisk.The results revealed that the NiCoCrAlY+YSZ hard coating has little effect on natural frequencies and good effect on damping.Also,the resonant response of the mistuned blisk can be suppressed remarkably,by the hard coating.

关 键 词：失谐整体叶盘 硬涂层 减缩建模 涂层厚度 阻尼能力 

分 类 号：TJ650.3[兵器科学与技术—武器系统与运用工程] TB535[理学—物理]