
2013
年
3
月
第
29
卷第
2
期
沈阳建筑大学学报(自然科学版)
Journal
of
Shenyang
Jianzhu
University
(Natural
Scienc
巳)
文章编号
:2095
-1922(2013 )02 -0367
-05
基础柔性的转子系统振动模态分析
王正浩孙成岩刘大任
2
张丽洁
3
范改燕
3
孟庆欣
l
M
缸
2013
Vol.
29
, No.2
(1.沈阳建筑大学交通与机械工程学院,辽宁沈阳
110168;
2.
沈阳建筑大学学报编辑部,辽宁忧阳
110168;
3.
沈阳建筑大学图书馆,辽宁沈阳
110168
)
摘
要:目的研究温度变化对基础柔性的双盘非对称转子系统振动模态的影响,为今后进一
步研究转子系统的不平衡响应、碰摩故障分析、分又与混沌行为和稳定性等动力学特征提供重
要的基础性工作.方法利用有限元分析基本理论,建立转子系统的有限元模型,采用
ANSYS
弹线性结构分析软件,来分析转子系统的振动模态.结果结果表明,温度对转子系统的固有频
率有一定的影响,各阶固有频率随温度的升高而降低;固有频率越大,温度越高,温度对转子
系统固有频率的影响就越大;转子系统的
1
-
8
低阶振动模态主要是转轴的弯曲振动,
9
阶以
上摸态主要是转轴的弯曲振动和基础的弯扭组合振动的搞合;当温度超过
600
't时,
3
-4
阶、
6
-7
阶和高于
8
阶固有频率频段内固有频率的相对降低程度变化较大.结论温度对转子系统
固有频率的影响在温度变化较高的情况下不可忽略,基础柔性主要对高阶振动模态有影响.
关键词:转子系统;柔性基础;振动模态;温度
中图分类号:
TU365
文献标志码
:A
Vibration Modal Analysis of Rotor System ßased
on Flexible Foundation
WANG Zhenghao
1
,
SUN
Chengyan
1
,
LIU
Daren
2
, ZHANG Lijie
3
, FAN Gaiyan
3
,
MENG Qingxin
1
(
1.
School
of
Traffic
and
Mechanical
Engineering
,
Shenyang
Jianzhu
Univers
坷,
Shenyang
,
China
110168
;2.
Editorial
Depart-
ment
of
Joun
时,
Shenyang
Jianzhu
University
,
Shenyang
,
China
,
110168
;3.
Li
brary
of
Shenyang
Ji
anzhu
University
,
Shenyang
,
China
110168)
Abstract:
1n
order to provide important basic work for the future study in rotor system on unbalance re-
sponse
, rubbing fault analysis , bifurcation and chaos behavior and stability
of
the dynamic characteristics ,
etc ,the effect
of
temperature variation on the vibration mode
of
double disk asymmetric rotor system consid-
ering foundation stiffness is analyzed. Using the basic theory
of
the finite element an
a1
ysis , the finite element
model
of
the rotor system is established, and the vibration model with ANSYS bomb linear structure an
a1
ysis
software in rotor system is analyzed. The analysis results
show
出
at
as follows: The first , it is a certain effect
of
temperature variation on natural frequency in rotor system and
a1
1 order
natural
仕
'equency
will reduce with
也
e
temperature power-up.
The
second
,也
e
larger natural
f
白
quency
is and the higher the temperature is , the
greater effect
of
temperature variation is on natural frequency in rotor system. The 1 st to 8th order vibration
mode in rotor system is mainly the bending vibration
of
spindle and more than
9th
order mode is mainly the
bending vibration
of
spindle coupling with the basis
of
combined bending and twisting vibration.
The
Last,
收稿日期
:2012
-03 -05
基金项目:国家自然科学基金项目(
10772043
)
;辽宁省教育厅基金项目
(2009
A5
93
)
作者简介:王正浩(1
960
一)
,男,教授,博士,主要从事旋转机械动力学、振动利用与控制研究