转子动力学入门知识

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Introduction to Rotor Dynamics:
A Physical Interpretation of the Principles and Application of Rotor Dynamics
by
Krish Ramesh, Ph.D.,
Senior Product Technology Engineer,
Dresser-Rand, Houston, TX – 77043.

Table of Contents
Abstract 1
1.0 Introduction 3
2.0 Basic Vibration Principles and Definitions 3
3.0 Discussion of Journal bearings 6
3.1 Motion of the shaft in the bearing 7
3.2 Bearing stiffness and damping coefficients 7
3.3 A closer look at bearing instability (Oil Whirl) 8
4.0 Entering the World of Rotor Dynamics 10
4.1 Rotor supported on rigid supports 10
4.2 Rotor supported on flexible supports 11
5.0 Rotor Dynamic Analyses 12
5.1 Undamped critical speed analysis 12
5.2 Unbalance response analysis 15
5.3 Damped eigenvalue analysis 17
5.4 Stability analysis 17
6.0 Technologies to Improve the Stability of Rotor-bearing Systems 20
7.0 References 22