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Basic Concepts | |
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Introduction to Structural Dynamics | |
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Types of Dynamic Loads | |
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Sources of Dynamic Loads | |
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Distinguishing Features of a Dynamic Problem | |
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Methodology for Dynamic Analysis | |
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Types of Structural Vibration | |
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Organization of the Text | |
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Systems of Units | |
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References | |
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Single-Degree-of-Freedom (SDOF) Systems | |
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Equation of Motion and Natural Frequency | |
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Fundamental Components of a Vibrating System | |
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D'Alembert's Principle of Dynamic Equilibrium | |
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The Energy Method | |
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The Principle of Virtual Displacements | |
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References | |
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Notation | |
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Problems | |
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Undamped Free Vibration | |
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Simple Harmonic Motion | |
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Interpretation of the Solution | |
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Equivalent Stiffness | |
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Rayleigh Method | |
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References | |
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Notation | |
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Problems | |
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4 | |
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Free Vibration with Viscous Damping | |
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Logarithmic Decrement | |
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Hysteresis Damping | |
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Coulomb Damping | |
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References | |
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Notation | |
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Problems | |
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Response to Harmonic Excitation | |
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Forced Harmonic Response of Undamped Systems | |
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Beating and Resonance | |
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Forced Harmonic Vibrations with Viscous Damping | |
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Effect of Damping Factor on Steady-State Response and Phase Angle | |
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Harmonic Excitation Caused by Rotating Unbalance | |
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Base Excitation | |
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Vibration Isolation and Transmissibility | |
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References | |
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Notation | |
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Problems | |
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Response to Periodic and Arbitrary Dynamic Excitation | |
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Response to Periodic Excitation | |
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Response to Unit Impulse | |
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Duhamel Integral | |
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Response to Arbitrary Dynamic Excitation | |
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Response Spectrum | |
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References | |
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Notation | |
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Problems | |
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Numerical Evaluation of Dynamic Response | |
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Interpolation of the Excitation | |
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Direct Integration of the Equation of Motion | |
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Central Difference Method | |
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Runge-Kutta Methods | |
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Average Acceleration Method | |
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Linear Acceleration Method | |
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Response to Base Excitation | |
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Response Spectra by Numerical Integration | |
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References | |
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Notation | |
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Problems | |
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Frequency Domain Analysis | |
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Alternative Forms of the Fourier Series | |
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Discrete Fourier Transform | |
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Fast Fourier Transform | |
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Discrete Fourier Transform Implementation Considerations | |
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Fourier Integral | |
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References | |
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Notation | |
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Problems | |
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Multi-Degree-of-Freedom (MDOF) Systems | |
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General Property Matrices for Vibrating Systems | |
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Flexibility Matrix | |
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Stiffness Matrix | |
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Inertia Properties: Mass Matrix | |
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The Eigenproblem in Vibration Analysis | |
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Static Condensation of the Stiffness Matrix | |
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References | |
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Notation | |
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Problems | |
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Equations of Motion and Undamped Free Vibration | |
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Hamilton's Principle and the Lagrange Equations | |
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Natural Vibration Frequencies | |
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Natural Vibration Modes | |
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Orthogonality of Natural Modes | |
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Systems Admitting Rigid-Body Modes | |
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Generalized Mass and Stiffness Matrices | |
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Free Vibration Response to Initial Conditions | |
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Approximate Methods for Estimating the Fundamental Frequency | |
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References | |
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Notation | |
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Problems | |
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Numerical Solution Methods for Natural Frequencies and Mode Shapes | |
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General Solution Methods for Eigenproblems | |
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Inverse Vector Iteration | |
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Forward Vector Iteration | |
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Generalized Jacobi Method | |
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Solution Methods for Large Eigenproblems | |
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References | |
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Notation | |
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Problems | |