1st Edition

Structural Identification and Damage Detection using Genetic Algorithms Structures and Infrastructures Book Series, Vol. 6

By Chan Ghee Koh, Michael J. Perry Copyright 2010
    140 Pages
    by CRC Press

    164 Pages
    by CRC Press

    Rapid advances in computational methods and computer capabilities have led to a new generation of structural identification strategies. Robust and efficient methods have successfully been developed on the basis of genetic algorithms (GA). This volume presents the development of a novel GA-based identification strategy that contains several advantageous features compared to previous methods. Focusing on structural identification problems with limited and noise contaminated measurements; it provides insight into the effects of various identification parameters on the identification accuracy for systems with known mass. It then proposes a generalization for systems with unknown mass, stiffness and damping properties. The GA identification strategy is subsequently extended for structural damage detection. The findings of the output-only strategy and substructural identification represent a great leap forward from the practical point of view. This book is intended for researchers, engineers and graduate students in structural and mechanical engineering, particularly for those interested in model calibration, parameter estimation and damage detection of structural and mechanical systems using the state-of-the-art GA methodology.


    1. Introduction

    • 1.1 Modelling and Simulation of Dynamic Systems
    • 1.2 Structural Identification and Damage Detection
    • 1.3 Overview of Structural Identification Methods

    2. A Primer to Genetic Algorithms

    • 2.1 Background to GA
    • 2.2 A Simple GA
    • 2.3 Theoretical Framework
    • 2.4 Advances in GAs
    • 2.5 Chapter Summary

    3. An Improved GA Strategy

    • 3.1 SSRM
    • 3.2 iGAMAS
    • 3.3 Chapter Summary

    4. Structural Identification by GA

    • 4.1 Applying GA to Structural Identification
    • 4.2 Identification of MDOF Systems Using SSRM
    • 4.3 Chapter Summary

    5. Output-Only Structural Identification

    • 5.1 Modification of the Identification strategy
    • 5.2 Numerical Study
    • 5.3 Seismic Example
    • 5.4 Chapter Summary

    6. Structural Damage Detection

    • 6.1 Damage Detection Strategy
    • 6.2 Verification of Strategy Using Simulated Data
    • 6.3 Chapter Summary

    7. Experimental Verification Study

    • 7.1 Preliminary Calculations and Testing
    • 7.2 Main Identification Tests
    • 7.3 Experimental Identification Results
    • 7.4 Output-Only Identification
    • 7.5 Chapter Summary

    8. Substructure Methods of Identification

    • 8.1 Substructural Identification
    • 8.2 Numerical Examples
    • 8.3 Chapter Summary

    References, Appendix, Index


    Chan Ghee Koh, Michael J. Perry,