A MODIFIED SURFACE SPLINE FOR EXPANSION AND SMOOTHING OF FREQUENCY-RESPONSE FUNCTIONS

Authors
WATERS TP LIEVEN NAJ
Citation
Tp. Waters et Naj. Lieven, A MODIFIED SURFACE SPLINE FOR EXPANSION AND SMOOTHING OF FREQUENCY-RESPONSE FUNCTIONS, Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering, 210(G1), 1996, pp. 77-92
Citations number
13
Categorie Soggetti
Aerospace Engineering & Tecnology","Engineering, Mechanical
Journal title
Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering → ACNP
ISSN journal
09544100
Volume
210
Issue
G1
Year of publication
1996
Pages
77 - 92
Database
ISI
SICI code
0954-4100(1996)210:G1<77:AMSSFE>2.0.ZU;2-L
Abstract
Measured frequency response functions (FRFs) are becoming more widely used to correlate finite element (FE) models with test structures. How ever, most model updating techniques require measured data at every de gree of freedom (DOF) in the FE model, a necessity that is rarely met by experiment. Furthermore, the sensitivity of updating techniques to noise measurement demands experimental data of the highest attainable quality, and often beyond. A modified surface spline is presented whic h can expand measured FRFs to unmeasured DOFs and also apply smoothing to reduce noise contamination.