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機械振動基礎 版權信息
- ISBN：9787512431492
- 條形碼：9787512431492 ; 978-7-5124-3149-2
- 裝幀：平裝-膠訂
- 冊數：暫無
- 重量：暫無
- 所屬分類：>>
機械振動基礎 本書特色
Abstract
This book mainly describes vibration problems for linear discrete and continuous systems inengineering. This book provides the background and techniques for modeling, analysis, design, andcontrol of vibration in mechanical engineering systems. This book is organized into 6 chapters,
including introduction, free vibration of single-degree-of-freedom (SDOF) systems, harmonicexcitation of SDOF systems, vibration of SDOF systems under general excitation, vibration ofmultiple-degree-of-freedom systems and vibration of continuous systems. Some backgroundmaterials (such as mathematical background, basic of MATLAB, Laplace transform and technicalterms) are presented in the appendices.
This book focuses on the linear vibration problems and emphasizes the ability to solveengineering vibration problems by using MATLABsoftware.Numerous examples and problemshave been included both to assist the student in mastering the material and to demonstrate theapplicability of the methods of analysis used in the book.Abstract
This book mainly describes vibration problems for linear discrete and continuous systems inengineering. This book provides the background and techniques for modeling, analysis, design, andcontrol of vibration in mechanical engineering systems. This book is organized into 6 chapters,
including introduction, free vibration of single-degree-of-freedom (SDOF) systems, harmonicexcitation of SDOF systems, vibration of SDOF systems under general excitation, vibration ofmultiple-degree-of-freedom systems and vibration of continuous systems. Some backgroundmaterials (such as mathematical background, basic of MATLAB, Laplace transform and technicalterms) are presented in the appendices.
This book focuses on the linear vibration problems and emphasizes the ability to solveengineering vibration problems by using MATLABsoftware.Numerous examples and problemshave been included both to assist the student in mastering the material and to demonstrate theapplicability of the methods of analysis used in the book.
This book is suitable as a course textbook in a single-semester course for second-year or thirdyearundergraduate students, or for Master degree candidate in any branch of engineering such asaeronautical and aerospace, aircraft design, and mechanical engineering. The book can also serve asa valuable reference tool for practicing engineers with an interest in vibration problems.
機械振動基礎 內容簡介
該書為英文版《機械振動基礎》，主要講述機械振動的基本理論。全書共分為六章，包括緒論、單自由度系統的自由振動、單自由度系統的簡諧受迫振動、單自由度系統的任意受迫振動、多自由度系統的振動、連續系統振動，并包括“數學基礎”、“MATLAB基礎”、“Laplace變換”和“中英文術語對照”四個附錄。 本書強調線性振動問題，理論循序漸進，并配有大量的例題、習題和MATLAB算例。本書可作為高等院校的航空航天、機械、能動或土木等專業本科生或者研究生教材，也可供相關的工程人員自學使用。
機械振動基礎 目錄
Contents
Chapter 1 Introduction 1
1.1 Background 1
1.2 Study of Vibration 3
1.3 Basic Concepts of Vibration 6
1.3.1 Degrees of freedom 7
1.3.2 Newton?s laws 8
1.3.3 Vibration classification 8
1.4 Organization of the Book 9
Questions 10
Chapter 2 Free Vibration of Single-Degree-Of-Freedom(SDOF) Systems 11
2.1 The Basic Mechanical Components 11
2.2 Free Vibration of UndampedSystems 12
2.2.1 Modelling of undamped SDOF systems 12
2.2.2 Simple harmonic motion 15
2.2.3 MATLAB examples 15
2.2.4 Solution for undamped SDOF systems 18
2.3 Rotary Systems 20
2.4 Springs Connected in Series or in Parallel 22
2.5 Modelling Using Energy Method 23
2.6 Viscously Damped SDOF Systems 29
2.6.1 Case 1: Overdamped motion (ζ> 1) 31
2.6.2 Case 2: Underdamped motion (ζ
2.6.3 Case 3: Critically damped motion (ζ=1) 34
2.7 Evaluating Damping Ratio from Measurements (Logarithmic Decrement) 36
2.8 Summary: the Effects of Damping on an Unforced Mass-spring System 39
2.9 MATLAB Examples for Free Vibration of SDOF Systems 39
2.9.1 Free vibration for undamped SDOF systems 39
2.9.2 Free vibration for underdamped SDOF systems 40
2.9.3 Free vibration for critical damped SDOF systems 42
2.9.4 Free vibration for overdamped SDOF systems 43
2.9.5 The GUI program for free vibration of SDOF system 44
Questions 45
Chapter 3 Harmonic Excitation of SDOF Systems 50
3.1 Harmonic Excitation 50
3.2 Complex Analysis 53
3.3 Undamped SDOF System with Harmonic Excitation 54
3.3.1 Excitation frequency ≠ natural frequency 54
3.3.2 Excitation frequency=natural frequency (resonant condition) 56
3.3.3 Response ratio for undamped SDOF system 57
3.4 Damped SDOF System with Harmonic Excitation 59
3.4.1 Response for damped SDOF system with harmonic excitation 59
3.4.2 Dynamic magnification factor for damped SDOF system 60
3.4.3 Response ratio for β=1 63
3.5 Harmonic Base Excitation 65
3.5.1 Relative motion 66
3.5.2 Absolute motion 67
3.6 Transmissibility of Vibration 73
3.6.1 Motion transmissibility 74
3.6.2 Force transmissibility 75
3.7 Rotating Unbalance 77
3.8 MATLAB Examples for Forced SDOF System 81
3.8.1 Harmonic excitation of undamped SDOF systems 81
3.8.2 Rotating unbalance vibration of SDOF systems 83
Questions 85
Chapter 4 Vibration of SDOF Systems under General Excitation 92
4.1 The Impulse Response 92
4.2 The Principle of Superposition 95
4.3 Response of SDOF Systems under a General Periodic Force 97
4.4 System?s Response to General Excitation by Convolution 104
4.5 System?s Response to General Excitation by the Laplace Transform 108
4.6 The Transfer Function 112
4.7 Composite Function Excitation 113
Questions 116
Chapter 5 Vibration of Multiple-Degree-Of-Freedom (MDOF) Systems 119
5.1 Free Vibration of Structures with Two-Degree-of-Freedom 119
5.1.1 Equations of motion for free vibration of two-degree-of-freedom 120
5.1.2 Free vibration analysis 121
5.1.3 Free vibration responses 124
5.2 Modelling of a System with n Degrees of Freedom 125
5.2.1 Governing equations 125
5.2.2 Coordinate coupling 130
5.3 Influence Coefficient Method 133
5.3.1 The stiffness influence coefficients 134
5.3.2 Flexibility influence coefficients 136
5.4 The Lagrange?sEquation 137
5.4.1 Derivation of Lagrange?s equations in Cartesian coordinates 138
5.4.2 Extension to general coordinate systems 140
5.4.3 Application of Lagrange?sequation 140
5.5 Solving the Equations of Motion of Undamped Systems UsingMATLAB 144
5.6 Vibration of Undamped MDOF System 148
5.6.1 Free response of undamped MDOF systems 148
5.6.2 Harmonic excitation of undampedsystems 156
5.7 Vibration of Underdamped MDOF Systems 158
5.7.1 Free vibration of underdamped MDOF systems 158
5.7.2 Steady-state forced vibration response for MDOF systems 162
5.8 The Dynamic Vibration Absorber 166
Questions 169
Chapter 6 Vibration of Continuous Systems 175
6.1 Transverse Vibration of Cables 175
6.2 Transverse Vibration of Beams 181
6.2.1 The governing equation of motion for beams 181
6.2.2 The natural frequencies and mode shapes for beams 183
6.2.3 MATLAB examples 186
6.3 The Structural Modes for Plates 190
Questions 193
Appendix A Mathematical Background 195
A.1 Mathematical Relations 195
A.2 Ordinary Differential Equations (ODE) 195
Appendix B Basic of MATLAB 199
B.1 How to Read this MATLAB Tutorial 199
B.2 Making Matrix 200
B.2.1 The colon operator 201
B.2.2 Matrix manipulations 202
B.2.3 The end keyword 203
B.2.4 Transposing a matrix 203
B.2.5 Element-wise operations 204
B.3 Functions 205
B.4 Graphics and Plotting 205
B.5 Programming in MATLAB 208
B.5.1 The M-files 208
B.5.2 Repeating with “for” loops 208
B.5.3 “if” statements 209
B.5.4 Writing function subroutines 210
B.6 Saving and Loading 210
B.7 The Help Menu 211
B.8 Set the Display Format for Output 212
B.9 Closing Remarks and References 212
Appendix C Properties of Laplace Transform and Laplace Transform Pairs 214
Appendix D Technical Terms 216
References 228
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