MATLAB旋转机械动力学建模与旋转特性分析
关键词 旋转机械；转子动力学；Jeffcott模型；响应分析
毕业论文设计说明书外文摘要
Title Dynamic modeling and analysis of rotating machinery rotation characteristics
Abstract
Rotating machinery is widely application in machinery, water conservancy, construction, power generation and other effects of national construction and people's living standards in various fields, mainly used for gas turbine, aero engine, wind generators and other electronic mechanical device. Scientists began very early in the study of rotor dynamics, rotor dynamics of the current research is perfect enough and began to more profound direction. This paper established the basic model of the rotor through Jeffcott model centrifugal and dynamic analysis of quality. List the differential equations of motion of the rotor. Through the design procedure and the chart is established to analyze the system response, and the response characteristics of map drawing. In the course of the study the modeling and Simulation of ANSYS program, with reference to the vibration theory of the rotor vibration frequency were analyzed, and the use of some knowledge of MATLAB programming and chart is derived. The final determination of the critical velocity and vibration frequency and phase frequency, in order to improve the stability and efficiency of rotating machinery.
Keywords Rotating machinery; Rotor dynamics; Jeffcott model; Response analysis
目 次
1引言.1
1.1文献综述.1
1.2国内外研究现状.2
2系统微分方程建立及模型建立.4
3 ANSYS软件分析模型转动模态.6
4通过图表分析旋转机械旋转特性.10
4.1计算程序的编写.10
4.2响应曲线的分析.19
4.3研究振动响应曲线的意义.20
5结论.22
6研究过程中遇到的困难及解决办法.23
总结与心得.25
致谢.26
参考文献.27
1 引言
1.1 文献综述
1.2 国内外研究现状
2 系统微分方程建立及模型建立
对于转子的动力学研究，我们选取最简单的偏心圆盘—轴承模型进行分析。例如图2.1的偏心圆盘平面图，由于轴承与内孔紧密连接，故只对该圆盘进行动态分析。圆盘的重心c与转轴中心o ꞌ不重合，即为离心转盘。当圆盘以角速度Ω转动时
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