Abstract
Abstract A finite element analysis of the blast resistance of the star-shaped honeycomb (SSH) core sandwich structure was carried out by using the CONWEP calculation model, with maximum deformation, energy absorption, and area specific energy absorption as the indicators of the explosion resistance. Based on the finite element method verified by experimental data, the influence of the structural parameters of each part of the SSH core sandwich panel on its anti-explosion performance was quantitatively investigated. The results show that the increase of the connecting ligament L and cell wall angle θ can improve the explosion resistance of the SSH core sandwich panel; the maximum deformation of the sandwich panel and the energy absorption capacity of the sandwich panel decreases with the increase of the three thickness coefficients (cell wall thickness t, the front panel thickness tf , and the back panel thickness tb ); the greater the TNT equivalent, the greater the maximum deformation of the sandwich panel, and the greater the energy dissipation; the use of SSH core sandwich panels as a protective structure in explosion protection systems significantly reduces the maximum deflection and enhances the energy absorption compared to solid panels of equal mass, respectively.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call