Modal Analysis and Testing (NATO Science Series E:, 363)

Montalvao E Silva, Julio M.

ISBN 10: 0792358945 / ISBN 13: 9780792358947

Editore: Springer, 1999

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Dati bibliografici

• Titolo: Modal Analysis and Testing (NATO Science Series E:, 363)
• Editore: Springer
• Data di pubblicazione: 1999
• Lingua: Inglese
• ISBN 10: 0792358945
• ISBN 13: 9780792358947
• Rilegatura: Brossura
• Condizione: New

Descrizione articolo

Riassunto

Modal analysis is one of the most powerful tools available to the engineer for the dynamic analysis of structures. Development has been rapid and spans the identification and evaluation of vibration phenomena, the validation, correction and updating of analytical models and the assessment of structural integrity. The texts assembled here form a coheren t work. After a first chapter on the fundamentals of modal analysis, the reader is introduced to signal processing and the basic rules of exchange and analysis of dynamic information. The derivation of theoretical models for modal analysis is then addressed, followed by three chapters on the different approaches to the derivation of models based in the identification of experimental data: time domain, frequency domain and pseudo-testing. This leads to the discussion of updating analytical models and to model quality assessment techniques. Further topics treated include damage detection and evaluation, structural modification, damping modelling, and the normalisation of complex modes. Less well-known topics are also included: active control of structures, acoustic modal analysis and neural networks for modal analysis, advanced optimization methods of model updating, modal analysis for rotating machinery, and nonlinearity in modal analysis.

Contenuti

An Overview of the Fundamentals of Modal Analysis.- to Signal Processing.- 1: Fundamentals of Signal Processing.- 2: Advanced Signal Processing.- Rules for the Exchange and Analysis of Dynamic Information.- I: Basic Definitions and Test Scenarios.- II: Numerically Simulated Results for a Deterministic Excitation with no External Loads.- III: Numerically Simulated and Experimental Results for a Deterministic Excitation with External Loads.- IV: Numerically Simulated and Experimental Results for a Random Excitation.- V: Q-Transmissibility Matrix vs. Single Point Transmissibility in Test Environments.- PartVI: Current Practice and Standards.- Theoretical Models for Modal Analysis.- Fundamentals of Time Domain Modal Identification.- Modal Identification Methods in the Frequency Domain.- Parametric Identification Based on Pseudo-Tests.- Updating of Analytical Models ― Basic Procedures and Extensions.- Model Quality Assessment and Model Updating.- Damage Detection and Evaluation I.- Damage Detection and Evaluation II Field Applications to Large Structures.- Structural Modification.- Damping: an Introduction to Viscoelastic Models.- Description of Damping and Applications.- Existence and Normalization of Complex Modes for Post Experimental Use in Modal Analysis.- Active Control of Structures.- Acoustic Modal Analysis.- Neural Networks for Modal Analysis.- Advanced Optimisation Methods for Model Updating.- Modal Analysis for Rotating Machinery.- Nonlinearity in Modal Analysis.