Buch, Englisch, 472 Seiten, Format (B × H): 157 mm x 235 mm, Gewicht: 822 g
Buch, Englisch, 472 Seiten, Format (B × H): 157 mm x 235 mm, Gewicht: 822 g
ISBN: 978-1-119-60560-7
Verlag: Wiley
Across many disciplines of engineering, dynamic problems of structures are a primary concern. Civil engineers, mechanical engineers, aircraft engineers, ocean engineers, and engineering students encounter these problems every day, and it is up to them systematically to grasp the basic concepts, calculation principles and calculation methods of structural dynamics. This book focuses on the basic theories and concepts, as well as the application and background of theories and concepts in engineering.
Since the basic principles and methods of dynamics are applied to other various engineering fields, this book can also be used as a reference for practicing engineers in the field across many multiple disciplines and for undergraduate and graduate students in other majors as well. The main contents include basic theory of dynamics, establishment of equation of motion, single degree of freedom systems, multi-degree of freedom systems, distributed-parameter systems, stochastic structural vibrations, research projects of structural dynamics, and structural dynamics of marine pipeline and risers.
Whether for the veteran engineer or student, this is a must-have for any scientific or engineering library.
Useful for students and veteran engineers and scientists alike, this is the only book covering these important issues facing anyone working with coastal models and ocean, coastal, and civil engineering in this area.
Autoren/Hrsg.
Weitere Infos & Material
Preface xi
About the Authors xiii
1 Introduction 1
1.1 Overview of Structural Dynamics 1
1.2 Dynamic Loads 2
1.2.1 Simple Harmonic Loads 2
1.2.2 Nonharmonic Periodic Loads 3
1.2.3 Impulsive Load 3
1.2.4 Irregular Dynamic Load 3
1.3 Characteristics of a Dynamic Problem 4
1.3.1 Methods of Discretization 6
1.3.2 Lumped Mass Procedure 6
1.3.3 Generalized Coordinate Procedure 7
1.3.4 Finite Element Method 9
1.4 Application of Structural Dynamics 10
1.4.1 Application of Structural Dynamics in Civil Engineering 10
1.4.2 Application of Structural Dynamics in Ocean Engineering 11
1.4.3 Application of Structural Dynamics in Aircraft Technology 14
Exercises 15
References 16
2 Establishment of the Structural Equation of Motion 17
2.1 General 17
2.1.1 Dynamic Freedom 17
2.1.2 Basics of Dynamic System 18
Inertia Force 18
Elastic Restoring Force 19
Damping Force 19
2.2 Formulation of the Equations of Motion 21
2.2.1 Direct Equilibration Using D’Alembert’s Principle 21
2.2.2 Principle of Virtual Displacements 23
2.2.3 Hamilton’s Principle 26
2.2.4 Lagrange’s Equations 30
2.3 Theory of Total Potential Energy Invariant Value of Elastic System Dynamics 32
2.3.1 The Main Idea of the Principle of Virtual Work 32
2.3.2 Derivation of the Principle of Total Potential Energy Invariant 34
2.4 Influence of Gravitational Forces 37
2.5 Influence of Support Excitation 38
Exercises 39
References 40
3 Single Degree of Freedom Systems 41
3.1 Response of Free Vibrations 41
3.1.1 Undamped Free Vibrations 43
3.1.2 Damped Free Vibrations 46
3.1.3 Damping and Its Measurement 52
3.2 Response to Harmonic Loading 57
3.2.1 Harmonic Vibration of an Undamped System 57
3.2.2 Harmonic Vibration of Damping System 62
3.2.3 Dynamic Amplification Coefficient 65
3.2.4 Resonance Reaction 68
3.2.5 Solution of Damping Ratio 70
3.3 Periodic Load Response 74
3.4 Impulsive Loading Response 80
3.4.1 Sine-Wave Impulse 80
3.4.2 Rectangular Impulse 82
3.4.3 Triangular Impulse 84
3.5 Response of Arbitrary Load 89
3.5.1 Duhamel Integral (Time-Domain Analysis) 89
3.5.2 Fourier Transform (Frequency-Domain Analysis) 95
3.6 Energy in Vibration 97
3.6.1 Energy in Free Vibration 97
3.6.2 Energy Dissipation of Viscous Damped System 99
3.6.3 Equivalent Viscous Damping 100
3.6.4 Complex Damping 103
3.6.5 Friction Damping 106
3.7 Structural Vibration Test 106
3.7.1 Introduction to Vibration Test 106
3.7.2 Exciting Equipment 107
3.7.3 Vibration Measuring Instrument 110
3.7.4 Data Acquisition and Analysis System 114
3.8 Vibration Isolation Principle 114
3.8.1 Active Vibration Isolation 114
3.8.2 Passive Vibration Isolation 116
3.9 Structural Vibration Induced Fatigue 121
3.9.1 Definition of Vibration Induced Fatigue 121
3.9.2 Characteristics of Vibration Induced Fatigue 122
Exercises 123
References 125
4 Multi-Degree of Freedom Systems 127
4.1 Two Degrees of Freedom System 128
4.1.1 Establishment of Motion Equation of Undamped Free Vibrations 128
4.1.2 Natural Frequency and Vibration Mode Shape 131
4.1.3 General Solutions of the Equations of Motion 134
4.2 Free Vibrations of Undamped System 135
4.2.1 Establishment of Motion Equation 135
4.2.2 Vibration Shape and Its Orthogonality 137
4.2.3 Generalized Mass and Generalized Stiffness 142
4.3 Practical Calculation Method of Dynamic Characteristics 146
4.3.1 Dunkerley Formula 147
4.3.2 Rayleigh Energy Method 150
4.3.3 Ritz Method 156
4.3.4 Matrix Iteration Method 160
4.3.5 Subspace Iteration
