| الملخص | Extensive research focus had been given to sacrificial sandwiched panels used
to mitigate the effects of blast loads. This is due to their ability to distribute the load
and absorbing significant portions of the blast energy. This numerical research studies
the behavior of sacrificial sandwiched panels with axially oriented octagonal tapered
core tubes subjected to near-field impulsive blast loading. The deformation behavior
and a number of assessment parameters consisting of the peak force, stroke efficiency,
energy absorption, and core efficiency were analyzed. The developed deformations
modes were mainly influenced by the top plate and tube thickness. Tubes of a 5° taper
performed unfavorably, exhibiting increased peak force and lower energy absorption.
Moreover, panels of top plate thickness of 4 mm exhibited higher stroke efficiency as
compared to panels of lower thickness. Furthermore, the top plate and tube thickness
recorded the highest influence on energy absorption. Finally, a percentage increase of
73.5% in core efficiency was observed for thick-plated panels as compared to thin
plated ones. |
