| 某航空发动机火焰筒在动载荷下的频率响应分析 |
| |
| 引用本文： | 赵永健,张大千.某航空发动机火焰筒在动载荷下的频率响应分析[J].沈阳航空工业学院学报,2006,23(5):6-7. |
| |
| 作者姓名： | 赵永健 张大千 |
| |
| 作者单位： | 沈阳航空工业学院,辽宁,沈阳,110034 |
| |
| 摘 要： | 在火焰筒中由于燃烧不均匀产生的脉动,会形成一个较宽频率范围的声激振动,受这种振动的影响火焰筒可能在某一个固有频率下激振,如果激振所造成的振动应力足够大,将产生高循环疲劳破坏,最终导致火焰筒局部壁面脱落1].因此研究发动机火焰筒在动载荷下的频率响应十分必要.利用UG软件建模和ANSYS动载荷分析软件,计算求出某航空发动机火焰筒的前十阶固有频率和振型.对火焰筒在0～1000Hz的激振频率下进行频率响应分析,分析结果对火焰筒设计和排故有一定参考作用.
|
| 关 键 词： | 火焰筒 动载荷 频率响应 |
| 文章编号： | 1007-1385(2006)05-0006-02 |
| 修稿时间： | 2006年3月15日 |
Analysis of frequency response of aero-engine flame-basket under dynamic load |
| |
| ZHAO Yong-Jian,ZHANG Da-Qian.Analysis of frequency response of aero-engine flame-basket under dynamic load[J].Journal of Shenyang Institute of Aeronautical Engineering,2006,23(5):6-7. |
| |
| Authors: | ZHAO Yong-Jian ZHANG Da-Qian |
| |
| Abstract: | The asymmetric burning in flame-basket can arouse a sound actuated vibration with a broad frequency scope.This vibration will make the flame-basket vibrating under a certain frequency and if the vibration stress large enough,it will lead to cycle fatigue break.It is necessary to analysis the frequency response of aero-engine flame-basket under dynamic load.In this paper,the first ten inherent frequencies and modal figures are calculated and an analysis of frequency response of flame-basket in a frequency scope from 0Hz to 1000Hz is also made using UG modeling and ANSYS dynamic loads analysis.The analysis result can also be referenced for designing and fault diagnosis of flame-basket. |
| |
| Keywords: | flame-basket dynamic load frequency response |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
