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أخوانى فى الله أحضرت لكم كتاب
Structural Dynamics and Vibration in Practice
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Chapter Basic Concepts Statics, dynamics and structural dynamics Coordinates, displacement, velocity and acceleration Simple harmonic motion Time history representation Complex exponential representation Mass, stiffness and damping Mass and inertia Stiffness 0 Stiffness and flexibility matrices Damping Energy methods in structural dynamics Rayleigh’s energy method The principle of virtual work Lagrange’s equations Linear and non-linear systems Systems of units Absolute and gravitational systems Conversion between systems The SI system References Chapter The Linear Single Degree of Freedom System: Classical Methods Setting up the differential equation of motion Single degree of freedom system with force input Single degree of freedom system with base motion input Free response of single-DOF systemChapter Forced response of the system by direct solution of the equation of motion The Linear Single Degree of Freedom System: Response in the Time Domain Exact analytical methods The Laplace transform method The convolution or Duhamel integral 0 Listings of standard responses ‘Semi-analytical’ methods Impulse response method Straight-line approximation to input function Superposition of standard responses Step-by-step numerical methods using approximate derivatives Euler method 0 Modified Euler method Central difference method The Runge–Kutta method Discussion of the simpler finite difference methods Dynamic factors 0 Dynamic factor for a square step input 0 Response spectra Response spectrum for a rectangular pulse Response spectrum for a sloping step References Chapter The Linear Single Degree of Freedom System: Response in the Frequency Domain Response of a single degree of freedom system with applied force Response expressed as amplitude and phase Complex response functions Frequency response functions Single-DOF system excited by base motion Base excitation, relative response Base excitation: absolute response Force transmissibility Excitation by a rotating unbalance Displacement response Force transmitted to supports References Chapter Damping Viscous and hysteretic damping models Damping as an energy loss 0 Energy loss per cycle – viscous model 0 Energy loss per cycle – hysteretic model 0 Graphical representation of energy loss 0 Specific damping capacity 0 Tests on damping materials s by direct solution of the equation Quantifying linear damping 0 Quality factor, Q 0 Logarithmic decrement 0 Number of cycles to half amplitude 0 Summary table for linear damping Heat dissipated by damping Non-linear damping Coulomb damping Square law damping Equivalent linear dampers Viscous equivalent for coulomb damping Viscous equivalent for square law damping Limit cycle oscillations with square-law damping Variation of damping and natural frequency in structures with amplitude and time Chapter Introduction to Multi-degree-of-freedom Systems Setting up the equations of motion for simple, undamped, multi-DOF systems Equations of motion from Newton’s second law and d’Alembert’s principle 0 Equations of motion from the stiffness matrix 0 Equations of motion from Lagrange’s equations Matrix methods for multi-DOF systems Mass and stiffness matrices: global coordinates Modal coordinates Transformation from global to modal coordinates Undamped normal modes Introducing eigenvalues and eigenvectors Damping in multi-DOF systems The damping matrix Damped and undamped modes Damping inserted from measurements Proportional damping Response of multi-DOF systems by normal mode summation Response of multi-DOF systems by direct integration Fourth-order Runge–Kutta method for multi-DOF systems Chapter Eigenvalues and Eigenvectors The eigenvalue problem in standard form The modal matrix Some basic methods for calculating real eigenvalues and eigenvectors Eigenvalues from the roots of the characteristic equation and eigenvectors by Gaussian elimination Matrix iteration Jacobi diagonalization Choleski factorization More advanced methods for extracting real eigenvalues and eigenvectors Complex (damped) eigenvalues and eigenvectors References 0 Chapter Vibration of Structures A historical view of structural dynamics methods Continuous systems Vibration of uniform beams in bending The Rayleigh–Ritz method: classical and modern Component mode methods Component mode synthesis The branch mode method 0 The finite element method An overview Equations of motion for individual elements Symmetrical structures References Chapter Fourier Transformation and Related Topics The Fourier series and its developments Fourier series Fourier coefficients in magnitude and phase form The Fourier series in complex notation The Fourier integral and Fourier transforms The discrete Fourier transform Derivation of the discrete Fourier transform Proprietary DFT codes The fast Fourier transform Aliasing Response of systems to periodic vibration 0 Response of a single-DOF system to a periodic input force References Chapter 0 Random Vibration 0 Stationarity, ergodicity, expected and average values 0 Amplitude probability distribution and density functions 0 0 The Gaussian or normal distribution 0 The power spectrum 0 Power spectrum of a periodic waveform 0 The power spectrum of a random waveform 0 Response of a system to a single random input 0 The frequency response function 0 Response power spectrum in terms of the input power spectrum 0 Response of a single-DOF system to a broadband random input 0 Response of a multi-DOF system to a single broad-band random input 0 Correlation functions and cross-power spectral density functions 0 Statistical correlation 0 The autocorrelation function 00 0 The cross-correlation function 0 0 Relationships between correlation functions and power spectral density functions 0 0 The response of structures to random inputs 0 0 The response of a structure to multiple random inputs 0 0 Measuring the dynamic properties of a structure 0 0 Computing power spectra and correlation functions using the discrete Fourier transform 0 0 Computing spectral density functions 0 Computing correlation functions 0 Leakage and data windows 0 Accuracy of spectral estimates from random data 0 Fatigue due to random vibration 0 0 The Rayleigh distribution 0 The S–N diagram References Chapter Vibration Reduction Vibration isolation Isolation from high environmental vibration Reducing the transmission of vibration forces The dynamic absorber The centrifugal pendulum dynamic absorber The damped vibration absorber The springless vibration absorber References Chapter Introduction to Self-Excited Systems Friction-induced vibration Small-amplitude behavior Large-amplitude behavior Friction-induced vibration in aircraft landing gear 0 Flutter The bending-torsion flutter of a wing Flutter equations An aircraft flutter clearance program in practice 0 Landing gear shimmy References Chapter Vibration testing Modal testing Theoretical basis Modal testing applied to an aircraft Environmental vibration testing Vibration inputs Functional tests and endurance tests Test control strategies Vibration fatigue testing in real time Vibration testing equipment Accelerometers Force transducers Exciters References Appendix A A Short Table of Laplace Transforms Appendix B Calculation of Flexibility Influence Coefficients Appendix C Acoustic Spectra Index of motion
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عدد المساهمات : 25 التقييم : 29 تاريخ التسجيل : 15/11/2012 العمر : 50 الدولة : Egypt العمل : Engineering الجامعة : Ain Shams
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عدد المساهمات : 18928 التقييم : 35294 تاريخ التسجيل : 01/07/2009 الدولة : مصر العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
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عدد المساهمات : 25 التقييم : 29 تاريخ التسجيل : 15/11/2012 العمر : 50 الدولة : Egypt العمل : Engineering الجامعة : Ain Shams
![كتاب Structural Dynamics and Vibration in Practice Empty](https://2img.net/i/fa/empty.gif) | موضوع: رد: كتاب Structural Dynamics and Vibration in Practice السبت 24 نوفمبر 2012, 11:11 am | |
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عدد المساهمات : 18928 التقييم : 35294 تاريخ التسجيل : 01/07/2009 الدولة : مصر العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
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