PARAMETRIC STUDY OF MULTI-ARCHED DOUBLE-LAYERED PANEL UNDER BLAST LOAD AND ITS OPTIMAL APPLICATION IN BLAST DOOR DESIGN

摘要

Traditionally,protective structures,such as blastresistant panel,are designed and fabricated in a bulky and solid way to resist blast loads. This not only increases the material and construction costs,but also undermines the operational performance of the protective structures. A new configuration of square door panel with a structural form of multiarched-surface has been numerically demonstrated displaying better performance than other existing structural forms of panels in blast resistant capacity. In order to maximize the structural performance of the multi-arched panels,it is essential to conduct parametric studies of the multiarched panels with the same weight of structure material or construction cost. Parametric studies are carried out by using finite element code Ls-Dyna to investigate the effects of panel configurations on the blast resistance capacity of the multi-arched panels. Furthermore,the optimal application of the new multi-arched panel in blast resistant door design is compared with the traditional design by considering the damage criteria from the current codes. The results indicate this new structural form of multi-arched panel can sustain higher blast intensity with the required functions.