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GEOMETRIC PARAMETERS FOR FINITE ELEMENT MODEL UPDATING OF JOINTS AND CONSTRAINTS

โœ Scribed by J.E. Mottershead; M.I. Friswell; G.H.T. Ng; J.A. Brandon

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
384 KB
Volume
10
Category
Article
ISSN
0888-3270

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โœฆ Synopsis

The sensitivity method is applied to update finite element models of welded joints and the boundary condition of a cantilever plate. Careful parameterisation is found to be critical in updating joints and boundary conditions, and the merits of geometric parameters are given special consideration. The use of nodal offset dimensions results in an updated model of the welded joint with physical interpretation. Similarly the ''rigid'' boundary in a cantilever plate is successfully updated using the effective length of the elements closest to the joint. In all cases an improvement on the analytical natural frequencies is demonstrated.

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