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Materials and Structures

, Volume 36, Issue 9, pp 570–577 | Cite as

Structural model adjustment using iterative methods

  • N. Roitman
  • C. Magluta
  • R. S. Oliveira
Article
  • 75 Downloads

Abstract

This paper reports a procedure for adjusting structural theoretical models to experimental results based on optimization techniques. It also covers some of the basic concepts of correlation techniques that are normally used to correlate natural frequencies and vibration modes. The developed method is tested performing some numerical simulations with imposed anomalies and through dynamic experimental tests in a simple supported beam. The obtained results show it can be an excellent tool for adjusting structural models and possibly for damage detection using the first vibration modes.

Keywords

Damage Detection Priority Level Inertia Moment Rotational Masse Goal Programming Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

Cet article présente un procédé basé sur des techniques d'optimisation pour l'ajustement des modèles théoriques de calcul de structures vis-à-vis des résultats obtenus expérimentalement. Certains concepts de base sur les techniques de corrélation qui sont normalement utilisés pour mettre en rapport les fréquences propres et les modes de vibration y sont aussi présentés. La méthode développée fut testée, soit par le moyen de simulations numériques avec des anomalies imposées, soit par le moyen d'analyse expérimentale dynamique sur des poutres sur deux appuis simples. Les résultats ont indiqué que la méthode ci-présentée peut être un outil très profitable pour l'ajustement des modèles de structures, son utilisation pour la détection de l'endommagement étant aussi envisageable à l'aide des premiers modes de vibration.

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Copyright information

© RILEM 2003

Authors and Affiliations

  • N. Roitman
    • 1
  • C. Magluta
    • 1
  • R. S. Oliveira
    • 1
  1. 1.COPPE/UFRJ-Prog de Eng. CivilRio de JaneiroBrasil

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