Original Research

Improvement of numerical models using experimental data

D. Z. Gorbler
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie | Vol 14, No 1 | a599 | DOI: https://doi.org/10.4102/satnt.v14i1.599 | © 1995 D. Z. Gorbler | This work is licensed under CC Attribution 4.0
Submitted: 10 July 1995 | Published: 10 July 1995

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D. Z. Gorbler,, South Africa

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Abstract

There is a growing interest in techniques for the updating of numerical structural models using experimental data. This work investigates the application of two fundamentally different approaches to the problem through a practical example. In one case the structural matrices are directly adjusted to force the eigenvalues and eigenvectors of the numerical model the same as the measured values. In the second case physical design variables are adjusted to improve the agreement between the eigenvalues. Although the direct adjustment of the structural matrices is much simpler to implement than the adjustment of physical design variables and also leads to better correspondence, the application thereof is restricted because of the changes in the physical structure of the matrices and it is suggested that further research be focused on the adjustment of physical parameters.

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