Abstract

Honeycomb sandwich panels are finding a lot of application in current day to day scenario. They are being used in submarines in deep under water to aero planes in the air. The advantage of using the honeycomb sandwich panels is their high strength to weight ratio. Modelling the impact behaviour of the sandwich panels provides valuable information during design of the panels. In the current work, dynamic behaviour of the sandwich panels is modelled when the panels are subjected to impact loading. The effect of core shape on the behaviour of the panels during impact loading is studied numerically by using FE techniques. Simulations are carried out using Ansys workbench. The results are compared to that of a plate. It is found that in sandwich panels, the failure is due to local indentation while that of a plain sheet is due to global deformation. Also in sandwich panels it is found that the failure is only the face sheet taking the impact.

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