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E-raamat: Analytical and Numerical Methods for Vibration Analyses [Wiley Online]

  • Formaat: 672 pages
  • Ilmumisaeg: 08-Nov-2013
  • Kirjastus: John Wiley & Sons Inc
  • ISBN-10: 1119137209
  • ISBN-13: 9781119137207
  • Wiley Online
  • Hind: 170,49 €*
  • * hind, mis tagab piiramatu üheaegsete kasutajate arvuga ligipääsu piiramatuks ajaks
  • Formaat: 672 pages
  • Ilmumisaeg: 08-Nov-2013
  • Kirjastus: John Wiley & Sons Inc
  • ISBN-10: 1119137209
  • ISBN-13: 9781119137207
Illustrates theories and associated mathematical expressions with numerical examples using various methods, leading to exact solutions, more accurate results, and more computationally efficient techniques This book presents the derivations of the equations of motion for all structure foundations using either the continuous model or the discrete model. This mathematical display is a strong feature of the book as it helps to explain in full detail how calculations are reached and interpreted. In addition to the simple 'uniform' and 'straight' beams, the book introduces solution techniques for the complicated non uniform beams (including linear or non-linear tapered beams), and curved beams. Most of the beams are analyzed by taking account of the effects of shear deformation and rotary inertia of the beams themselves as well as the eccentricities and mass moments of inertia of the attachments.





Demonstrates approaches which dramatically cut CPU times to a fraction of conventional FEM Presents "mode shapes" in addition to natural frequencies, which are critical for designers Gives detailed derivations for continuous and discrete model equations of motions Summarizes the analytical and numerical methods for the natural frequencies, mode shapes, and time histories of straight structures rods shafts Euler beams strings Timoshenko beams membranes/thin plates Conical rods and shafts Tapered beams Curved beams Has applications for students taking courses including vibration mechanics, dynamics of structures, and finite element analyses of structures, the transfer matrix method, and Jacobi method

This book is ideal for graduate students in mechanical, civil, marine, aeronautical engineering courses as well as advanced undergraduates with a background in General Physics, Calculus, and Mechanics of Material. The book is also a handy reference for researchers and professional engineers.
About the Author xiii
Preface xv
1 Introduction to Structural Vibrations 1(18)
1.1 Terminology
1(4)
1.2 Types of Vibration
5(4)
1.3 Objectives of Vibration Analyses
9(5)
1.3.1 Free Vibration Analysis
9(1)
1.3.2 Forced Vibration Analysis
10(4)
1.4 Global and Local Vibrations
14(2)
1.5 Theoretical Approaches to Structural Vibrations
16(2)
References
18(1)
2 Analytical Solutions for Uniform Continuous Systems 19(154)
2.1 Methods for Obtaining Equations of Motion of a Vibrating System
20(1)
2.2 Vibration of a Stretched String
21(4)
2.2.1 Equation of Motion
21(1)
2.2.2 Free Vibration of a Uniform Clamped—Clamped String
22(3)
2.3 Longitudinal Vibration of a Continuous Rod
25(9)
2.3.1 Equation of Motion
25(3)
2.3.2 Free Vibration of a Uniform Rod
28(6)
2.4 Torsional Vibration of a Continuous Shaft
34(7)
2.4.1 Equation of Motion
34(2)
2.4.2 Free Vibration of a Uniform Shaft
36(5)
2.5 Flexural Vibration of a Continuous Euler—Bernoulli Beam
41(19)
2.5.1 Equation of Motion
41(2)
2.5.2 Free Vibration of a Uniform Euler—Bernoulli Beam
43(11)
2.5.3 Numerical Example
54(6)
2.6 Vibration of Axial-Loaded Uniform Euler—Bernoulli Beam
60(22)
2.6.1 Equation of Motion
60(2)
2.6.2 Free Vibration of an Axial-Loaded Uniform Beam
62(7)
2.6.3 Numerical Example
69(3)
2.6.4 Critical Buckling Load of a Uniform Euler—Bernoulli Beam
72(10)
2.7 Vibration of an Euler—Bernoulli Beam on the Elastic Foundation
82(8)
2.7.1 Influence of Stiffness Ratio and Total Beam Length
86(1)
2.7.2 Influence of Supporting Conditions of the Beam
87(3)
2.8 Vibration of an Axial-Loaded Euler Beam on the Elastic Foundation
90(6)
2.8.1 Equation of Motion
90(1)
2.8.2 Free Vibration of a Uniform Beam
91(2)
2.8.3 Numerical Example
93(3)
2.9 Flexural Vibration of a Continuous Timoshenko Beam
96(11)
2.9.1 Equation of Motion
96(2)
2.9.2 Free Vibration of a Uniform Timoshenko Beam
98(7)
2.9.3 Numerical Example
105(2)
2.10 Vibrations of a Shear Beam and a Rotary Beam
107(9)
2.10.1 Free Vibration of a Shear Beam
107(3)
2.10.2 Free Vibration of a Rotary Beam
110(6)
2.11 Vibration of an Axial-Loaded Timoshenko Beam
116(10)
2.11.1 Equation of Motion
116(2)
2.11.2 Free Vibration of an Axial-Loaded Uniform Timoshenko Beam
118(6)
2.11.3 Numerical Example
124(2)
2.12 Vibration of a Timoshenko Beam on the Elastic Foundation
126(8)
2.12.1 Equation of Motion
126(2)
2.12.2 Free Vibration of a Uniform Beam on the Elastic Foundation
128(4)
2.12.3 Numerical Example
132(2)
2.13 Vibration of an Axial-Loaded Timoshenko Beam on the Elastic Foundation
134(8)
2.13.1 Equation of Motion
134(1)
2.13.2 Free Vibration of a Uniform Timoshenko Beam
135(4)
2.13.3 Numerical Example
139(3)
2.14 Vibration of Membranes
142(15)
2.14.1 Free Vibration of a Rectangular Membrane
142(6)
2.14.2 Free Vibration of a Circular Membrane
148(9)
2.15 Vibration of Flat Plates
157(14)
2.15.1 Free Vibration of a Rectangular Plate
158(4)
2.15.2 Free Vibration of a Circular Plate
162(9)
References
171(2)
3 Analytical Solutions for Non-Uniform Continuous Systems: Tapered Beams 173(72)
3.1 Longitudinal Vibration of a Conical Rod
173(15)
3.1.1 Determination of Natural Frequencies and Natural Mode Shapes
173(7)
3.1.2 Determination of Normal Mode Shapes
180(2)
3.1.3 Numerical Examples
182(6)
3.2 Torsional Vibration of a Conical Shaft
188(12)
3.2.1 Determination of Natural Frequencies and Natural Mode Shapes
188(4)
3.2.2 Determination of Normal Mode Shapes
192(2)
3.2.3 Numerical Example
194(6)
3.3 Displacement Function for Free Bending Vibration of a Tapered Beam
200(4)
3.4 Bending Vibration of a Single-Tapered Beam
204(13)
3.4.1 Determination of Natural Frequencies and Natural Mode Shapes
204(6)
3.4.2 Determination of Normal Mode Shapes
210(2)
3.4.3 Finite Element Model of a Single-Tapered Beam
212(1)
3.4.4 Numerical Example
213(4)
3.5 Bending Vibration of a Double-Tapered Beam
217(9)
3.5.1 Determination of Natural Frequencies and Natural Mode Shapes
217(4)
3.5.2 Determination of Normal Mode Shapes
221(1)
3.5.3 Finite Element Model of a Double-Tapered Beam
222(2)
3.5.4 Numerical Example
224(2)
3.6 Bending Vibration of a Nonlinearly Tapered Beam
226(17)
3.6.1 Equation of Motion and Boundary Conditions
226(6)
3.6.2 Natural Frequencies and Mode Shapes for Various Supporting Conditions
232(6)
3.6.3 Finite Element Model of a Non-Uniform Beam
238(1)
3.6.4 Numerical Example
239(4)
References
243(2)
4 Transfer Matrix Methods for Discrete and Continuous Systems 245(110)
4.1 Torsional Vibrations of Multi-Degrees-of-Freedom Systems
245(23)
4.1.1 Holzer Method for Torsional Vibrations
245(12)
4.1.2 Transfer Matrix Method for Torsional Vibrations
257(11)
4.2 Lumped-Mass Model Transfer Matrix Method for Flexural Vibrations
268(36)
4.2.1 Transfer Matrices for a Station and a Field
269(3)
4.2.2 Free Vibration of a Flexural Beam
272(7)
4.2.3 Discretization of a Continuous Beam
279(1)
4.2.4 Transfer Matrices for a Timoshenko Beam
279(2)
4.2.5 Numerical Example
281(10)
4.2.6 A Timoshenko Beam Carrying Multiple Various Concentrated Elements
291(9)
4.2.7 Transfer Matrix for Axial-Loaded Euler Beam and Timoshenko Beam
300(4)
4.3 Continuous-Mass Model Transfer Matrix Method for Flexural Vibrations
304(32)
4.3.1 Flexural Vibration of an Euler—Bernoulli Beam
304(10)
4.3.2 Flexural Vibration of a Timoshenko Beam with Axial Load
314(22)
4.4 Flexural Vibrations of Beams with In-Span Rigid (Pinned) Supports
336(17)
4.4.1 Transfer Matrix of a Station Located at an In-Span Rigid (Pinned) Support
336(4)
4.4.2 Natural Frequencies and Mode Shapes of a Multi-Span Beam
340(8)
4.4.3 Numerical Examples
348(5)
References
353(2)
5 Eigenproblem and Jacobi Method 355(44)
5.1 Eigenproblem
355(2)
5.2 Natural Frequencies, Natural Mode Shapes and Unit-Amplitude Mode Shapes
357(7)
5.3 Determination of Normal Mode Shapes
364(3)
5.3.1 Normal Mode Shapes Obtained From Natural Ones
364(1)
5.3.2 Normal Mode Shapes Obtained From Unit-Amplitude Ones
365(2)
5.4 Solution of Standard Eigenproblem with Standard Jacobi Method
367(11)
5.4.1 Formulation Based on Forward Multiplication
368(3)
5.4.2 Formulation Based on Backward Multiplication
371(1)
5.4.3 Convergence of Iterations
372(6)
5.5 Solution of Generalized Eigenproblem with Generalized Jacobi Method
378(20)
5.5.1 The Standard Jacobi Method
378(4)
5.5.2 The Generalized Jacobi Method
382(1)
5.5.3 Formulation Based on Forward Multiplication
382(2)
5.5.4 Determination of Elements of Rotation Matrix (α and γ)
384(3)
5.5.5 Convergence of Iterations
387(1)
5.5.6 Formulation Based on Backward Multiplication
387(11)
5.6 Solution of Semi-Definite System with Generalized Jacobi Method
398(1)
5.7 Solution of Damped Eigenproblem
398(1)
References
398(1)
6 Vibration Analysis by Finite Element Method 399(84)
6.1 Equation of Motion and Property Matrices
399(1)
6.2 Longitudinal (Axial) Vibration of a Rod
400(11)
6.3 Property Matrices of a Torsional Shaft
411(1)
6.4 Flexural Vibration of an Euler—Bernoulli Beam
412(18)
6.5 Shape Functions for a Three-Dimensional Timoshenko Beam Element
430(21)
6.5.1 Assumptions for the Formulations
430(1)
6.5.2 Shear Deformations Due to Translational Nodal Displacements V1 and V3
431(4)
6.5.3 Shear Deformations Due to Rotational Nodal Displacements V2 and V4
435(2)
6.5.4 Determination of Shape Functions φyi(ξ) (i = 1-4)
437(3)
6.5.5 Determination of Shape Functions φxi(ξ) (i = 1-4)
440(1)
6.5.6 Determination of Shape Functions φzi(ξ) (i = 1-4)
441(2)
6.5.7 Determination of Shape Functions φxi(ξ) (i = 1-4)
443(2)
6.5.8 Shape Functions for a 3D Beam Element
445(6)
6.6 Property Matrices of a Three-Dimensional Timoshenko Beam Element
451(11)
6.6.1 Stiffness Matrix of a 3D Timoshenko Beam Element
451(7)
6.6.2 Mass Matrix of a 3D Timoshenko Beam Element
458(4)
6.7 Transformation Matrix for a Two-Dimensional Beam Element
462(2)
6.8 Transformations of Element Stiffness Matrix and Mass Matrix
464(1)
6.9 Transformation Matrix for a Three-Dimensional Beam Element
465(4)
6.10 Property Matrices of a Beam Element with Concentrated Elements
469(3)
6.11 Property Matrices of Rigid—Pinned and Pinned—Rigid Beam Elements
472(5)
6.11.1 Property Matrices of the R-P Beam Element
474(2)
6.11.2 Property Matrices of the P-R Beam Element
476(1)
6.12 Geometric Stiffness Matrix of a Beam Element Due to Axial Load
477(3)
6.13 Stiffness Matrix of a Beam Element Due to Elastic Foundation
480(2)
References
482(1)
7 Analytical Methods and Finite Element Method for Free Vibration Analyses of Circularly Curved Beams 483(126)
7.1 Analytical Solution for Out-of-Plane Vibration of a Curved Euler Beam
483(20)
7.1.1 Differential Equations for Displacement Functions
484(1)
7.1.2 Determination of Displacement Functions
485(5)
7.1.3 Internal Forces and Moments
490(1)
7.1.4 Equilibrium and Continuity Conditions
491(2)
7.1.5 Determination of Natural Frequencies and Mode Shapes
493(2)
7.1.6 Classical and Non-Classical Boundary Conditions
495(2)
7.1.7 Numerical Examples
497(6)
7.2 Analytical Solution for Out-of-Plane Vibration of a Curved Timoshenko Beam
503(18)
7.2.1 Coupled Equations of Motion and Boundary Conditions
503(4)
7.2.2 Uncoupled Equation of Motion for uy
507(1)
7.2.3 The Relationships Between ψx, ψθ and uy
508(1)
7.2.4 Determination of Displacement Functions Uy(θ), ψx(θ) and ψθ(θ)
509(3)
7.2.5 Internal Forces and Moments
512(1)
7.2.6 Classical Boundary Conditions
513(2)
7.2.7 Equilibrium and Compatibility Conditions
515(3)
7.2.8 Determination of Natural Frequencies and Mode Shapes
518(2)
7.2.9 Numerical Examples
520(1)
7.3 Analytical Solution for In-Plane Vibration of a Curved Euler Beam
521(26)
7.3.1 Differential Equations for Displacement Functions
521(6)
7.3.2 Determination of Displacement Functions
527(2)
7.3.3 Internal Forces and Moments
529(1)
7.3.4 Continuity and Equilibrium Conditions
530(3)
7.3.5 Determination of Natural Frequencies and Mode Shapes
533(3)
7.3.6 Classical Boundary Conditions
536(1)
7.3.7 Mode Shapes Obtained From Finite Element Method and Analytical (Exact) Method
537(2)
7.3.8 Numerical Examples
539(8)
7.4 Analytical Solution for In-Plane Vibration of a Curved Timoshenko Beam
547(17)
7.4.1 Differential Equations for Displacement Functions
547(5)
7.4.2 Determination of Displacement Functions
552(1)
7.4.3 Internal Forces and Moments
553(1)
7.4.4 Equilibrium and Compatibility Conditions
554(4)
7.4.5 Determination of Natural Frequencies and Mode Shapes
558(2)
7.4.6 Classical and Non-Classical Boundary Conditions
560(2)
7.4.7 Numerical Examples
562(2)
7.5 Out-of-Plane Vibration of a Curved Beam by Finite Element Method with Curved Beam Elements
564(14)
7.5.1 Displacement Functions and Shape Functions
565(8)
7.5.2 Stiffness Matrix for Curved Beam Element
573(2)
7.5.3 Mass Matrix for Curved Beam Element
575(1)
7.5.4 Numerical Example
576(2)
7.6 In-Plane Vibration of a Curved Beam by Finite Element Method with Curved Beam Elements
578(17)
7.6.1 Displacement Functions
578(8)
7.6.2 Element Stiffness Matrix
586(1)
7.6.3 Element Mass Matrix
587(2)
7.6.4 Boundary Conditions of the Curved and Straight Finite Element Methods
589(1)
7.6.5 Numerical Examples
590(5)
7.7 Finite Element Method with Straight Beam Elements for Out-of-Plane Vibration of a Curved Beam
595(6)
7.7.1 Property Matrices of Straight Beam Element for Out-of-Plane Vibrations
596(3)
7.7.2 Transformation Matrix for Out-of-Plane Straight Beam Element
599(2)
7.8 Finite Element Method with Straight Beam Elements for In-Plane Vibration of a Curved Beam
601(5)
7.8.1 Property Matrices of Straight Beam Element for In-Plane Vibrations
602(3)
7.8.2 Transformation Matrix for the In-Plane Straight Beam Element
605(1)
References
606(3)
8 Solution for the Equations of Motion 609(68)
8.1 Free Vibration Response of an SDOF System
609(3)
8.2 Response of an Undamped SDOF System Due to Arbitrary Loading
612(2)
8.3 Response of a Damped SDOF System Due to Arbitrary Loading
614(1)
8.4 Numerical Method for the Duhamel Integral
615(18)
8.4.1 General Summation Techniques
615(14)
8.4.2 The Linear Loading Method
629(4)
8.5 Exact Solution for the Duhamel Integral
633(3)
8.6 Exact Solution for a Damped SDOF System Using the Classical Method
636(3)
8.7 Exact Solution for an Undamped SDOF System Using the Classical Method
639(3)
8.8 Approximate Solution for an SDOF Damped System by the Central Difference Method
642(3)
8.9 Solution for the Equations of Motion of an MDOF System
645(14)
8.9.1 Direct Integration Methods
645(4)
8.9.2 The Mode Superposition Method
649(10)
8.10 Determination of Forced Vibration Response Amplitudes
659(9)
8.10.1 Total and Steady Response Amplitudes of an SDOF System
660(2)
8.10.2 Determination of Steady Response Amplitudes of an MDOF System
662(6)
8.11 Numerical Examples for Forced Vibration Response Amplitudes
668(7)
8.11.1 Frequency-Response Curves of an SDOF System
668(2)
8.11.2 Frequency-Response Curves of an MDOF System
670(5)
References
675(2)
Appendices 677(18)
A.1 List of Integrals
677(3)
A.2 Theory of Modified Half-Interval (or Bisection) Method
680(1)
A.3 Determinations of Influence Coefficients
681(4)
A.3.1 Determination of Influence Coefficients aiYM and aiψM
681(2)
A.3.2 Determination of Influence Coefficients aiYQ and aiψQ
683(2)
A.4 Exact Solution of a Cubic Equation
685(1)
A.5 Solution of a Cubic Equation Associated with Its Complex Roots
686(1)
A.6 Coefficients of Matrix [ H] Defined by Equation (7.387)
687(2)
A.7 Coefficients of Matrix [ H] Defined by Equation (7.439)
689(2)
A.8 Exact Solution for a Simply Supported Euler Arch
691(2)
References
693(2)
Index 695
Jong Shyong Wu, Chinese computer scientist, educator. Second lieutenant Chinese Army, 1966-1967. Member Society Naval Architects and Marine Engineers (board directors, Medal 1991), Society Mechanical Engineers. Wu, Jong Shyong was born on January 1, 1941 in Tainan, Taiwan. Bachelor of Science, National National Cheng-Kung University University, 1966. Master of Science, National National Cheng-Kung University University, 1969. Doctor of Philosophy., University Strathclyde, 1978.