Numerical Analysis of Dynamic Response of Corrugated Core Sandwich Panels Subjected to Near-Field Air Blast Loading

Abstract EN

Three-dimensional fully coupled simulation is conducted to analyze the dynamic response of sandwich panels comprising equal thicknesses face sheets sandwiching a corrugated core when subjected to localized impulse created by the detonation of cylindrical explosive.

A large number of computational cases have been calculated to comprehensively investigate the performance of sandwich panels under near-field air blast loading.

Results show that the deformation/failure modes of panels depend strongly on stand-off distance.

The beneficial FSI effect can be enhanced by decreasing the thickness of front face sheet.

The core configuration has a negligible influence on the peak reflected pressure, but it has an effect on the deflection of a panel.

It is found that the benefits of a sandwich panel over an equivalent weight solid plate to withstand near-field air blast loading are more evident at lower stand-off distance.