Dramatic effect of cross-correlations in random vibrations of discrete systems, beams, plates, and shells / Isaac Elishakoss.

This volume explains the dramatic effect of cross-correlations in forming the structural response of aircraft in turbulent excitation, ships in rough seas, cars on irregular roads, and other dynamic regimes. It brings into sharp focus the dramatic effect of cross correlations often neglected due to...

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Bibliographic Details
Main Author: Elishakoff, Isaac
Format: eBook
Language:English
Published: Cham : Springer, 2020.
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Online Access:Click for online access

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245 1 0 |a Dramatic effect of cross-correlations in random vibrations of discrete systems, beams, plates, and shells /  |c Isaac Elishakoss. 
260 |a Cham :  |b Springer,  |c 2020. 
300 |a 1 online resource (xxiii, 338 pages) :  |b illustrations 
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505 0 |a Intro -- Preface -- References -- Contents -- 1 Normal-Mode Approach in Random Vibrations -- 1.1 Introductory Comments -- 1.2 Analysis of a Two-Degree-of-Freedom System with Coinciding Natural Frequencies -- 1.3 Simple Model Illustrating Crandall's Random Vibration Results -- 1.4 Theoretical Analysis -- 1.5 One Particular Case: f2 = f3 = 0 with Probability One -- 1.6 f1(t) = f3(t) = 0 with Probability One -- References -- 2 Random Vibration of System with Finitely Many Degrees of Freedom and Several Coalescent Natural Frequencies -- 2.1 Introductory Comments 
505 8 |a 2.2 Analysis of a Multi-Degree-of-Freedom System with Many Coinciding Frequencies -- 2.3 System with Two Degrees of Freedom -- 2.4 Systems with Three and More Degrees of Freedom -- References -- 3 Random Vibration of a Vehicle Model -- 3.1 Introductory Comments -- 3.2 Analysis of the Friswell Model -- 3.3 Kim and Yoon's Four-Wheel Vehicle Model -- 3.4 Conclusion -- References -- 4 Hybrid Optimization and Anti-optimization of a Stochastically Excited Beam -- 4.1 Introductory Comments -- 4.2 Basic Equations -- 4.3 Evaluation of the Mode Shapes -- 4.4 Anti-symmetric Mode Shapes -- 4.5 Limiting Cases 
505 8 |a 4.6 Random Vibrations -- 4.7 Symmetric Excitation -- 4.8 Anti-symmetric Excitation -- 4.9 General Case: Non-symmetric Random Excitation -- 4.10 Point-Driven Excitation -- 4.11 Conclusion -- References -- 5 Random Vibration of a Point-Driven Two-Span Beam on an Elastic Foundation -- 5.1 Introductory Comments -- 5.2 Random Vibrations of a Two-Span Beam Without Elastic Foundation -- 5.3 Formulation of the Problem -- 5.4 Natural Frequencies and Modes of the Two-Span Beam -- 5.5 Random Vibration Response -- 5.6 Numerical Results and Discussion -- 5.7 Conclusion -- References 
505 8 |a 6 Random Vibrations of Orthotropic Plates -- 6.1 Introductory Comments -- 6.2 Analytical Formulation -- 6.3 Random Vibrations of Plates with Opposite Edges Simply Supported -- 6.4 Conclusion -- References -- 7 Wide-Band Random Axisymmetric Vibration of Cylindrical Shells -- 7.1 Introductory Comments -- 7.2 Random Vibration of a Thin Cylindrical Shell -- 7.3 Description of the Calculations -- 7.4 Discussion of the Results -- References -- 8 Turbulent Flow-Excited Vibrations of a Shallow Cylindrical Shell -- 8.1 Introductory Comments -- 8.2 Analytical Formulation 
505 8 |a 8.3 Excitation Cross-Spectral Densities -- 8.4 Shell Response Characteristics -- 8.5 Random Vibrations in Cylindrical Shells Containing an Acoustic Medium -- 8.6 Conclusion -- References -- 9 On the Role of Cross-Correlations in the Random Vibrations of Spherical Shells -- 9.1 Introductory Comments -- 9.2 Response Cross-Spectral Densities of a Spherical Shell -- 9.3 Hysteretic Damping -- 9.4 Example Problem and Discussion -- 9.5 Conclusion -- References -- 10 Dramatic Effect of Cross-Correlations in Random Vibration of Point-Driven Flat Plate and Spherically Curved Panel 
500 |a 10.1 Introductory Comments 
504 |a Includes bibliographical references and indexes. 
520 |a This volume explains the dramatic effect of cross-correlations in forming the structural response of aircraft in turbulent excitation, ships in rough seas, cars on irregular roads, and other dynamic regimes. It brings into sharp focus the dramatic effect of cross correlations often neglected due to the analytical difficulty of their evaluation. Veteran author Professor Isaac Elishakoff illustrates how neglect of cross correlations could result in underestimation of the response by tens or hundreds of percentages the effect of the random vibrations of structures' main elements, including beams, plates, and shells. Clarifies the common misconception that natural frequencies of structures are well apart from each other; Illustrates that the interaction of associated modes in plates can dramatically alter the random response due to presence of coinciding frequencies; Demonstrates that natural frequencies in beams on elastic foundation, as well as cylindrical or spherical shells, might cluster together resulting in substantial percentage error if cross-correlations are ignored. 
650 0 |a Random vibration. 
650 0 |a Mechanics, Applied. 
650 0 |a Vibration. 
650 0 |a Dynamics. 
650 0 |a Mechanics. 
650 0 |a Aerospace engineering. 
650 7 |a vibration (physical)  |2 aat 
650 7 |a kinetics (dynamics)  |2 aat 
650 7 |a mechanics (physics)  |2 aat 
650 7 |a aeronautical engineering.  |2 aat 
650 7 |a aerospace engineering.  |2 aat 
650 7 |a Mechanics of solids.  |2 bicssc 
650 7 |a Aerospace & aviation technology.  |2 bicssc 
650 7 |a Automotive technology & trades.  |2 bicssc 
650 7 |a Classical mechanics.  |2 bicssc 
650 7 |a Dynamics & vibration.  |2 bicssc 
650 7 |a Science  |x Mechanics  |x Solids.  |2 bisacsh 
650 7 |a Technology & Engineering  |x Aeronautics & Astronautics.  |2 bisacsh 
650 7 |a Technology & Engineering  |x Automotive.  |2 bisacsh 
650 7 |a Science  |x Mechanics  |x General.  |2 bisacsh 
650 7 |a Technology & Engineering  |x Mechanical.  |2 bisacsh 
650 7 |a Mechanics, Applied  |2 fast 
650 7 |a Random vibration  |2 fast 
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