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http://hdl.handle.net/2074/1508
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| Title: | Studies in dynamic design using updated models |
| Authors: | Modak, S V
Kundra, T K
Nakra, B C |
| Keywords: | finite element model
dynamics
iterative method
noisy data
mass and beam modifications
iterative method |
| Issue Date: | 2005 |
| Citation: | Journal of Sound and Vibration, 281(3-5), 943-964 |
| Abstract: | Model updating techniques are used to update a finite element model of a structure so that an updated model predicts more accurately the dynamics of a structure. The application of such an updated model in dynamic design demands that it also predict the effects of structural modifications with a reasonable accuracy. This paper presents studies that deal with updating of a finite element model of a structure and its subsequent use for predicting the effects of structural modifications. Updated models have been obtained by a recently proposed method of model updating based on constrained optimization and by an iterative method of model updating based on the modal data. The suitability of updated models for predicting the effect of structural modifications is evaluated by some computer and laboratory experiments. First, a study is performed using a simulated fixed–fixed beam. Cases of complete, incomplete and noisy data are considered. The simulated study is followed by a study involving ... |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/1508 |
| Appears in Collections: | Mechanical Engineering
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| modakstu2005.pdf | | 1028Kb | Adobe PDF | View/Open |
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