Dynamic model updating using pseudo modal energies

T. Marwala, S. Adhikari, P. S. Heyns

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


This work introduces dynamic model updating technique using pseudo modal energies and genetic algorithm. Pseudo modal energies are defined as the integrals of the frequency response function over certain frequency bandwidths that bind the natural frequencies. Three different crossover techniques are used to implement genetic algorithm and this are simple, arithmetic and heuristic crossovers. The proposed techniques are successfully used to update a finite element model of a freely suspended beam. The experimental results show that the updated models give improved predictions of the measured modal properties including those that were not included in the updating process. The results suggest that the simple and arithmetic crossovers are better suited for an updating problem than heuristic crossover.

Original languageEnglish
Pages (from-to)355-360
Number of pages6
JournalProceedings of the International Modal Analysis Conference - IMAC
Publication statusPublished - 2001
Externally publishedYes
EventProceedings of IMAC-XIX: A Conference on Structural Dynamics - Kissimmee, FL, United States
Duration: 5 Feb 20018 Feb 2001

ASJC Scopus subject areas

  • General Engineering


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