VALIDATION AND CONFIRMATION OF STATIC FINITE ELEMENT MODEL BY CONSIDERING UNCERTAINTIES

The finite element static models are validated by considering uncertain factors. The concepts of the correlation and the sensitivity in selecting uncertain parameters are proposed, as well as a general area metric, to validate finite element models. The model of an integrated stiffened panel is used to demonstrate the validation approach. The physical tests of the integrated stiffened panels are carried out to obtain the buckling loads. The finite element model is built with consideration of the stiffened panel and the test-bed. The reliability of the model is assessed against the experimental data by using the area metric. The validation approach in this paper can be used for similar engineering cases.