弹性支承黏弹性阻尼-航空发动机薄壁机匣动力学特性分析

吴宏春; 韩清凯

doi:10.13224/j.cnki.jasp.2020.07.009

弹性支承黏弹性阻尼-航空发动机薄壁机匣动力学特性分析

doi: 10.13224/j.cnki.jasp.2020.07.009

吴宏春^1,2,
韩清凯^1,2

基金项目: 国家自然科学基金面上项目（11472068）

计量
- 文章访问数: 337
- HTML浏览量: 4
- PDF量: 581
- 被引次数: 0
出版历程
- 收稿日期: 2019-11-09
- 刊出日期: 2020-07-28

Dynamic characteristics analysis of aero engine casing structures with viscoelastic damping materials under elastic supports

WU Hongchun^1,2,
HAN Qingkai^1,2

1.
School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China
2.
Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry,of Education,School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China

摘要

摘要: 面向航空发动机薄壁机匣部件黏弹性约束层阻尼减振分析的工程需求,开展黏弹性阻尼-机匣弹性支承边界模拟和结构动力学分析研究。将机匣进行力学简化为圆柱壳体模型,通过引入一系列人工弹簧,将圆柱壳边界载荷的转化为弹簧的弹性势能,实现了机匣任意边界支撑刚度的有效模拟。结果表明：增大边界刚度可以提高机匣的固有频率,机匣的阻尼特性对支承刚度的敏感性与固有频率相反。此外,在机匣工程设计过程中,可以通过加强支撑结构的环向和法向刚度,获得满意的结构动力学特性。
- 机匣 /
- 薄壁圆柱壳 /
- 黏弹性阻尼 /
- 弹性边界 /
- 动力学特性
Abstract: The analysis approach of the casing with viscoelastic damping material treatment under arbitrary elastic supports was proposed for the requirement of the vibration control of aero engine casing. The casing was considered as a thin-wall cylindrical shell. Then the governing dynamic equation of casing treated with the constrained layer damping was established, in which the effects of shear stress due to viscoelastic damping material were considered. By introducing a series of boundary spring elements, the boundary load of the casing was transformed into the elastic potential energy of the spring, and the effective simulation of the arbitrary boundary support stiffness on the casing was realized. Results showed that the increasing boundary stiffness could improve the natural frequencies of the casing, while the sensitivity of the damping characteristics to the support stiffness was opposite to the natural frequencies. In addition, in the design process of engineering casing, the satisfactory structural dynamic characteristics can be obtained by strengthening the circumferential and normal stiffness of the supporting structure.
- casing /
- thin-walled cylindrical shell /
- viscoelastic damping materials /
- ,elastic edges /
- dynamic characteristics

HTML

参考文献(21)

[1]	KERWIN J,EDWARD M.Damping of flexural waves by a constrained viscoelastic layer［J］.The Journal of the Acoustical Society of America,1959,31(7):952-962.
[2]	ROSS D,UNGAR E,KERWIN E M.Damping of plate flexural vibrations by means of viscoelastic laminate in structural damping［M］.New York:ASME,1959.
[3]	MEAD D J,MARKUS S.The forced vibration of a three-layer,damped sandwich beam with arbitrary boundary conditions［J］.Journal of Sound and Vibration,1969,10(2):163-175.
[4]	RAO V S,SANKAR B V,SUN C T.Constrained layer damping of initially stressed composite beams using finite elements［J］.Journal of Composite Materials,1992,26(12):1752-1766.
[5]	RAVI S S,KUNDRA T K,NAKRA B C.A response re-analysis of damped beams using eigenparameter perturbation［J］.Journal of Sound and Vibration,1995,179(3):399-412.
[6]	ZHANG Shaohui,CHEN Hualing.A study on the damping characteristics of laminated composites with integral viscoelastic layers［J］.Composite Structures,2006,74(1):63-69.
[7]	PAN H.Axisymmetrical vibrations of a circular sandwich shell with a viscoelastic core layer［J］.Journal of Sound and Vibration,1969,9(2):338-348.
[8]	ALAM N,ASNANI N.Vibration and damping analysis of a multilayered cylindrical shell:Part Ⅰ theoretical analysis［J］.AIAA Journal,1984,22(6):803-810.
[9]	ALAM N,ASNANI N.Vibration and damping analysis of a multilayered cylindrical shell:Part Ⅱ numerical results［J］.AIAA Journal,1984,22(7):975-981.
[10]	李恩奇,李道奎,唐国金,等.基于传递函数方法的局部覆盖环状CLD圆柱壳动力学分析［J］.航空学报,2007,28(6):1487-1493. LI Enqi,LI Daokui,TANG Guojin,et al.Dynamic analysis of cylindrical shell with partially covered ring-shape constrained layer damping by the transfer function method［J］.Acta Aeronautica et Astronautica Sinica,2007,28(6):1487-1493.(in Chinese)
[11]	XIANG Yu,HANG Yuying,LU Jing,et al.New matrix method for analyzing vibration and damping effect of sandwich circular cylindrical shell with viscoelastic core［J］.Applied Mathematics and Mechanics,2008,29(12):1587-1600.
[12]	ZHENG Ling,QIU Quan,WAN Haochuan,et al.Damping analysis of multilayer passive constrained layer damping on cylindrical shell using transfer function method［J］.Journal of Vibration and Acoustics,2014,136(3):031001.1-031001.9.
[13]	RAMESH T C,GANSEAN N.Orthotropic cylindrical shells with a viscoelastic core:a vibration and damping analysis［J］.Journal of Sound and Vibration,1994,175(4):535-555.
[14]	RAMESH T C,GANSEAN N.Finite element analysis of cylindrical shells with a constrained viscoelastic layer［J］.Journal of Sound and Vibration,1994,172(3):359-370.
[15]	RAMESH T C,GANSEAN N.Influence of constrained damping layer on the resonant response of orthotropic cylindrical shells［J］.Journal of Sound and Vibration,1995,185(3):483-500.
[16]	CHEN L,HUANG S.Vibrations of a cylindrical shell with partially constrained layer damping (CLD) treatment［J］.International Journal of Mechanical Sciences,1999,41(12):1485-1498.
[17]	WANG H,CHEN L.Finite element dynamic analysis of orthotropic cylindrical shells with a constrained damping layer［J］.Finite Elements in Analysis and Design,2004,40(7):737-755.
[18]	HU Y C,HUANG S C.The frequency response and damping effect of three-layer thin shell with viscoelastic core［J］.Computers and Structures,2000,76(5):577-591.
[19]	DOUGLAS B E,YANG J C.Transverse compressional damping in the vibratory response of elastic-viscoelastic-elastic beams［J］.AIAA Journal,1978,16(9):925-930.
[20]	ZHENG H,CAI C,PAU G,et al.Minimizing vibration response of cylindrical shells through layout optimization of passive constrained layer damping treatments［J］.Journal of Sound and Vibration,2005,279(3):739-756.
[21]	SONG Xuyuan,ZHAI Jingyu,CHEN Yugang,et al.Traveling wave analysis of rotating cross-ply laminated cylindrical shells with arbitrary boundaries conditions via Rayleigh-Ritz method［J］.Composite Structures,2015,133:1101-1115.