Research on the Impact of Honeycomb Sandwich Plates at Natural Frequency Changed with Geometric Parameters
Xiaoman Liu1, Guojun Du1, *, Xiaoxia Niu2
Identifiers and Pagination:Year: 2015
First Page: 1045
Last Page: 1050
Publisher Id: TOMEJ-9-1045
Article History:Received Date: 17/02/2014
Revision Received Date: 21/03/2015
Acceptance Date: 09/06/2015
Electronic publication date: 7/10/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In this paper, in order to find the impact of sandwich plates at natural frequency changed with its geometric and physical parameters, we deduced free vibration equation derived sandwich panels. We took the hexagonal honeycomb sandwich plates as example, and derived natural frequencies for each for use in the modeling and modal analysis, and then discussed the effect of skin thickness, core spacing and core height on the natural frequency of honeycomb sandwich plates. The result shows that the honeycomb sandwich plates have great rigidity, and compared to other parameters, the change of core height has a greater impact on the natural frequencies of honeycomb sandwich plates. When the surface thickness of quadrilateral honeycomb sandwich plates becomes thicker, its natural frequency increases with increasing length of core grid. When sandwich mesh length reaches a certain level, the natural frequency increased firstly and then decreased. When the sandwich mesh length is longer enough, the frequency decreased with the increase in the length. When the core height increased, the natural frequency increased. When the quadrilateral mesh becomes longer, its natural frequency appears to decline after the initial increase. The influence of geometric parameters on hexagonal honeycomb sandwich plates is same as on quadrilateral honeycomb and other soft sandwich plates. Later experiments confirmed some of above conclusions.