机械振动噪声学一教程.pptVIP

机 械 振 动 噪 声 学;教科书（Textbook）: 赵玫等，机械振动与噪声学， 科学出版社， 2004;2. ? R.F. Barron, Industrial Noise Control and Acoustics, Marcel Dekker, 2003 ?郑兆昌主编， 机械振动（上册），机械工业出版社，1980 ?商大中，动力分析基础，哈尔滨工程大学出版社，1999 ?季文美，机械振动，科学出版社， 1985;1. 1 Mechanical Vibration and Control ;1. 1 Mechanical Vibration and Control ;Useful vibrations： String vibration; harmonic oscillator, resonator; Vibrating road roller; Vibrating feeder; Vibrating forming machine. ;1. 1 Mechanical Vibration and Control ;1. 1 Mechanical Vibration and Control ;1. 1 Mechanical Vibration and Control ;Chapter 1 Introduction;Chapter 1 Introduction;1. 1 Mechanical Vibration and Control ;1. 1 Mechanical Vibration and Control ;1. 1 Mechanical Vibration and Control ;Vibration System;1. 1 Mechanical Vibration and Control ;Experiment;控制方法：新的保护罩用打孔金属薄板和金属丝网制成。;1. 1 Mechanical Vibration and Control ;1. 2 Mechanical Noise and Control ;1. 2 Mechanical Noise and Control ;1. 2 Mechanical Noise and Control ;1. 2 Mechanical Noise and Control ;1. 2 Mechanical Noise and Control ; Class 1;Chapter 2 Vibration of Single-Degree-of-Freedom System (SDOF) ;Mechanical model of physical system;A shafting of diesel engine 柴油机轴系扭振模型 1. piston 2. connecting rod 3. crankshaft 4. flywheel 5. intermediate shaft 6. screw propeller;2.1.1.1 Discretization of physical system; Elastic Mounted Diesel Generating Set ;Example 2-1;Mass element 质量元件 Inelastic, rigid body，kinetic energy storage elements 是无弹性的刚体,储存动能的元件;Spring (elastic) element 弹性元件 Potential energy storage elements 是势能储存元件;Damping element 阻尼元件 Energy dissipation elements 耗能元件;(1) Force method;(1) Force method Example 2-2 ;single pendulum;Multiple Mass System ;(1) Force method Example 2-4 ;Linearization Vibration Differential Equation;(2) Energy method Example 2-5 ： ;Multiple Mass System ;Kinetic energy V Potential energy U Dissipation energy P ;Multi-mass (or spring, damping) elements ;Parallel springs;Series Springs ;Par