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In the last decade, design and optimization of structures subjected to blast loads got the attention of many researchers. The great threaten of terrorizing activates; in addition to instability in different areas of the world drive these researches. Sandwich panels give an optimum and proven tools to handle problems related to design and analysis of such structures. The present work focuses on increasing the blast resistance of steel sandwich panels. These panels can be applied on defense works, homeland security, banks and civilian industries intended to minimize the effects of accidental explosions. Sandwich constructions with metallic hexagonal honeycomb core are utilized in this research due to its high specific strength and stiffness with minimum weight. Minimizing the weight of the metallic hexagonal honeycomb core is regarded as the objective function of the optimization process that was tested under blast loads resulted from detonating 100 kg of TNT at 5-m stand-off distance. The strength and stiffness of honeycomb core panels were evaluated based on constraint condition of strength and deformation. A response surface analysis was performed on the parameters affecting the allowable global displacement by simplifying the explosion pattern and developing a response limits adapting TM5 requirements [1]. F.E. technique was utilized to handle the numerical configuration of the studied cases. ANSYS code [2] proved the environment for processing the analysis and optimization. The proposed approach suggested to control the parametric optimization analysis succeeded to provide an optimum configuration for the metallic hexagonal honeycomb core structure under blasting condition.

OPTIMUM DESIGN FOR SANDWICH PANELS WITH METALLIC HEXAGONAL HONEYCOMB CORE SUBJECTED TO BLAST LOADS