The uncertainty in finite element models of machines and structures arises mostly at joints and connections. In this paper examples are presented to show how equivalent models of joints can be constructed by parameterising and updating finite elements so that their predictions are reconciled with vibration test results. The parameterisation is a key issue because, (i) if the updated model predictions are to meet the test results then the predictions must be sensitive to the parameters, and (ii) the parameters must be physically understandable and located at that part of the model which is deemed to be in error. Examples including a welded joint, a rubber seal joint, and an aluminium space frame with screwed joints are discussed.
Finite element model updating - case studies
1997
13 Seiten, 6 Bilder, 9 Tabellen, 6 Quellen
Conference paper
English
Finite element model updating - case studies
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