Shiqiang Li

TL;DR: In this paper, the response of metallic sandwich panels with stepwise graded aluminum honeycomb cores under blast loading was investigated using the LS-DYNA software, and it was observed that the core compression stage was coupled with the fluid-structure interaction stage and the compression of the core layer decreased from the central to the peripheral zone.

TL;DR: In this paper, the structural response of composite panels with triple layered graded honeycomb cores under blast loading was analyzed by using finite element software LS-DYNA after validation against the experiments and the structural deformation modes were classified into three types and the core layer deformation was divided into three regions.

TL;DR: In this paper, a hierarchical core structure was introduced to sandwich panels for bearing the blast loading, in which each vertex of a regular hexagonal cell was replaced with a smaller hexagonal unit.

TL;DR: In this paper, the deformation/failure modes of sandwich panels against blast impulse were investigated experimentally, and it was shown that the back facesheet deflection increases linearly with the impulse, apart from the petal-tearing failure of front facesheet.

TL;DR: In this article, the deformation of spherical shells, the energy absorption of each core layer, and the propagation characteristic of stress waves in the foam core layers were analyzed and discussed.