In this paper an extension of the antiresonance-based model updating method that}by estimating antiresonances of unmeasured point FRFs}allows the use of previously identified modal data, is applied to the finite element model updating of the GARTEUR benchmark. The various steps of the process (model
RESULTS OBTAINED BY MINIMISING NATURAL-FREQUENCY ERRORS AND USING PHYSICAL REASONING
โ Scribed by C. MARES; J.E. MOTTERSHEAD; M.I. FRISWELL
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 124 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0888-3270
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โฆ Synopsis
A finite element model of the GARTEUR SM-AG19 test structure is updated. The philosophy applied in selecting the updating parameters is based on physical understanding, scrutiny of the mode shapes and sensitivity calculations. The 'corrected' model is shown not only to accurately reproduce test data used in the updating process, but also to provide results in agreement with test data (not used for updating) from the modified structure.
๐ SIMILAR VOLUMES
A plate model of the Garteur structure has been developed and updated. The cost function for the evaluation of the model's improvement consisted of residuals between calculated and measured natural frequencies and mode shapes. A brief description of the FE-model is followed by the presentation of th
The classical inverse sensitivity approach was applied. In the presented application, the deviations between analytical and measured natural frequencies and mode shapes were minimised to update user selected stiffness, mass and geometric parameters. The selection of the updating parameters was based