Numerical simulation of metallic honeycomb sandwich panel structures under dynamic loads

In this paper,an investigation is carried out to study the dynamic mechanical response of square honeycomb core sandwich panels made from a super-austenitic stainless steel alloy using abaqus/explicit. different impulse loads on the sandwich panels are used by changing the charge weight of the explosive at a constant stand-off distance. at the lowest intensity load,significant front face bending is observed. an air blast equation is used to determine the blast loads at the front surfaces of the test panels,and these were used as inputs to finite element calculations of the dynamic response of the sandwich structure. very good agreement is noticed between the finite element model predictions of the sandwich panel front and back face displacements and the data available in literature. it is also found that the honeycomb sandwich panels suffers significantly from smaller back face deflections than solid plates of identical mass.