• 书名:旋转机械振动
  • 价格:¥313 (不含邮费)
  • 作者:CRC Press
  • 购买咨询电话:0756-3376806
  • 咨询邮箱:guhe@lc-lube.com

Description

This reference is a powerful tool to strengthen vital in-house competency on the subject for professionals in a variety of fields. After presenting governing fundamental principles and background on modern measurement, computational tools, and troubleshooting methods, the author provides practical instruction and demonstration on how to diagnose vibration problems and formulate solutions. The topic is covered in four sequential sections: Primer on Rotor Vibration, Use of Rotor Dynamic Analyses, Monitoring and Diagnostics, and Troubleshooting Case Studies. This book includes comprehensive descriptions of vibration symptoms for rotor unbalance, dynamic instability, rotor-stator rubs, misalignment, loose parts, cracked shafts, and rub-induced thermal bows. It is an essential reference for mechanical, chemical, design, manufacturing, materials, aerospace, and reliability engineers. It is particularly useful as a reference for specialists in vibration, rotating machinery, and turbomachinery.

Format: Hardback
Author: Maurice L. Adams, Jr.
Published: 2010
Pages: 476
Table Of Contents: 
Part I: Primer on Rotor Vibration

Vibration Concepts and Methods
One-Degree-of-Freedom Model
Multi-DOF Models 
Modes, Excitation, and Stability of Multi-DOF Models
Lateral Rotor Vibration Analysis Models
Simple Linear Models
Formulations for RDA Software
Insights into Linear LRVs
Nonlinear Effects in Rotor Dynamical Systems
Torsional Rotor Vibration Analysis Models
Rotor-Based Spinning Reference Frames
Single Uncoupled Rotor
Coupled Rotors
Semidefinite Systems

Part II: Rotor Dynamic Analyses

RDA Code for Lateral Rotor Vibration Analyses
Unbalance Steady-State Response Computations
Instability Self-Excited-Vibration Threshold Computations
Additional Sample Problems
Bearing and Seal Rotor Dynamics
Liquid-Lubricated Fluid-Film Journal Bearings
Experiments to Measure Dynamic Coefficients
Annular Seals
Rolling Contact Bearings
Squeeze-Film Dampers
Magnetic Bearings
Compliance Surface Foil Gas Bearings
Turbo-Machinery Impeller and Blade Effects
Centrifugal Pumps
Centrifugal Compressors 
High-Pressure Steam Turbines and Gas Turbines 
Axial Flow Compressors

Part III Monitoring and Diagnostics

Rotor Vibration Measurement and Acquisition 
Introduction to Monitoring and Diagnostics
Measured Vibration Signals and Associated Sensors
Vibration Data Acquisition
Signal Conditioning
Vibration Severity Guidelines
Casing and Bearing Cap Vibration Displacement Guidelines 
Standards, Guidelines, and Acceptance Criteria 
Shaft Displacement Criteria 
Signal Analysis and Identification of Vibration Causes 
Vibration Trending and Baselines 
FFT Spectrum 
Rotor Orbit Trajectories 
Bode, Polar, and Spectrum Cascade Plots 
Wavelet Analysis Tools 
Chaos Analysis Tools 
Symptoms and Identification of Vibration Causes

Part IV Trouble-Shooting Case Studies

Forced Vibration and Critical Speed Case Studies 
HP Steam Turbine Passage through First Critical Speed 
HPâ??IP Turbine Second Critical Speed through Power Cycling 
Boiler Feed Pumps: Critical Speeds at Operating Speed 
Nuclear Feed Water Pump Cyclic Thermal Rotor Bow 
Power Plant Boiler Circulating Pumps 
Nuclear Plant Cooling Tower Circulating Pump Resonance 
Generator Exciter Collector Shaft Critical Speeds 
Self-Excited Rotor Vibration Case Studies 
Swirl Brakes Cure Steam Whirl in a 1300 MW Unit 
Bearing Unloaded by Nozzle Forces Allows Steam Whirl 
Misalignment Causes Oil Whip/Steam Whirl "Duet" 
Additional Rotor Vibration Cases and Topics 
Vertical Rotor Machines 
Vector Turning from Synchronously Modulated Rubs 
Air Preheater Drive Structural Resonances 
Aircraft Auxiliary Power Unit Commutator Vibration-Caused Uneven Wear 
Impact Tests for Vibration Problem Diagnoses 
Bearing Looseness Effects 
Tilting-Pad versus Fixed-Surface Journal Bearings 
Base-Motion Excitations from Earthquake and Shock 
Parametric Excitation: Nonaxisymmetric Shaft Stiffness 
Rotor Balancing

Index



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