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Free vibration of sandwich plates with impact‐induced damage
Author(s) -
Burlayenko Vyacheslav N.,
Sadowski Tomasz
Publication year - 2009
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200910064
Subject(s) - vibration , materials science , indentation , core (optical fiber) , finite element method , structural engineering , composite material , planar , honeycomb , normal mode , engineering , acoustics , physics , computer science , computer graphics (images)
Free vibrations of impact‐damaged sandwich plates with honeycomb and foam cores are studied. It is assumed that damages caused by impact events are to exist before the vibration start and to be constant during oscillations. The influence of the impact damage modes involving the core crushing (planar damage), face sheets fracture (indentation) and the core to face sheets interface degradation (debonding) on the natural frequencies and associated mode shapes of the sandwich plates was investigated using commercially available finite element code ABAQUS. (© 2009 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)