Influence of design parameter variability on the dynamic behaviour of honeycomb panels

Honeycomb sandwich panels are layered structures that consist of at least five layers: two thin face sheets are bonded to a thick honeycomb core. Because of the wide range of panel parameters, numerical modelling is needed to provide insight into the structural characteristics of a particular panel. In this paper the effect of design parameter variations on the dynamic behaviour of honeycomb sandwich panels, in particular of thermoplastic Monopan panels, is studied. In the first section the specific structure of Monopan honeycomb panels is illustrated. The different design parameters of panels of this type are outlined. The second section deals with the estimation and experimental identification of the different design parameters. Several sandwich parameters are found to exhibit a significant amount of scatter. The third section deals with the numerical modelling of the panels. Estimated and measured average parameter values are used to obtain a good initial FE model. The fourth section covers the experimental validation of the simulation results for a number of test panels. Measurement uncertainty is discussed in detail. The fifth section presents the model updating procedure. Sensitivity analysis is used, and global and local model updating is discussed.

ISBN:978-90-73802-87-2

Publication year:2010

BOF-keylabel:yes

IOF-keylabel:yes

Authors from:Higher Education

Accessibility:Open