A new model updating method is presented here with emphasis on identi"cation of joint sti!nesses. A so-called reduced-order characteristic polynomial (ROCP) is "rst de"ned in terms of the measured natural frequency, the partial modal properties predicted from a #awed FEM model and the model paramete
A new approach to modal-based structural dynamic model updating and joint identification
β Scribed by A.S. Nobari; D.A. Robb; D.J. Ewins
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 638 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0888-3270
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β¦ Synopsis
In this paper, a new modal-based method for the two tasks of structural dynamic model updating and identification of joint models in structural assemblies is introduced. The method is formulated in detail and its theoretical and computational capabilities and shortcomings are discussed. The performance of the new method is assessed through a series of case studies and the effects of various parameters on the results are discussed. Also, a sensitivity study is undertaken to examine the method's performance in the presence of measurement noise.
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