Abstract: Parameter selection and quality validation are of great importance in finite element model updating. This paper presents some results which demonstrate the relationship between parameter selection and updated model's quality through simulation cases. Three quality levels with corresponding validation criteria are employed with an emphasis on updated model's prediction ability. Results of updating based on experimental modal test data are shown as an application example. An aircraft test structure, GARTEUR, which is generally utilized in Europe, is employed in both the simulation case and the experimental case. Sensitivity-based model updating approach is applied.

Key words: solid mechanics, model validation, finite element method, model updating, parameter selection