摘要
提出一种对叶片涂敷硬涂层的减振方法来提高失谐整体叶盘的可靠性,并以叶片双面涂敷Ni Co Cr Al Y+YSZ硬涂层的失谐整体叶盘为例进行振动研究.首先,为了在保证计算精度的前提下提高计算效率,利用固定界面动刚度模态综合法对涂层叶盘有限元模型进行了减缩处理;其次,基于该有限元减缩模型对涂层叶盘进行模态分析,并与全尺寸有限元模型做出了数据比较;最后探究了硬涂层对整体叶盘的影响.研究结果表明,Ni Co Cr Al Y+YSZ硬涂层具有较强的阻尼效应,能够显著抑制整体叶盘的共振响应.
A vibration reduction method by hard coating was proposed to improve the working reliability of mistuned blisks （integrally bladed disks） , and the mistuned blisk with depositing NiCoCrAlY ＋ YSZ hard coating on both sides of the blades was taken as an example to conduct the vibration investigation. Firstly, the ROM （reduced-order model） of the hard-coated blisk, which can improve the computational efficiency under the premise of ensuring the computational precision, was established by using an improved fixed-IDSMSM （fixed interface dynamic stiffness modal synthesis method）. Secondly,the modal analysis of the hard-coated blisk was achieved based on the proposed ROM, and the results were compared with those of the FOM （full-order FEM）. Finally, the influence of hard coating on mistuned blisks was studied. The results revealed that the NiCoCrAlY ＋ YSZ hard coating has a good damping effect on mistuned blisks,and can suppress remarkably the resonant response of mistuned blisks.
作者
高峰
孙伟
GAO Feng;SUN Wei(School of Mechanical Engineering ＆ Automation,Northeastern University,Shenyang 110819,China)
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第6期856-861,共6页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(51775092)
关键词
失谐整体叶盘
硬涂层
减缩模型
阻尼减振
mistuned blisk
hard coating
reduced-order model
damped vibration reduction
