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Metal-polyurea composites have gained significant interest as a potential composite in resisting blast and ballistic impact loads. Although the loading mechanisms are different for these two types of loading, they both fall under the category of high-strain-inducing loads. Resisting such loads require high energy absorption capabilities, which is the main advantage that has promoted the use of elastomers such as polyurea in these applications. This chapter presents the findings of experimental and numerical investigations involving metal-polyurea composites under a blast load equivalent to 1kg...

This paper studies the nonlinear dynamic response of arching masonry walls to blast load. The methodology combines laboratory blast testing and nonlinear dynamic modeling of arching one-way masonry walls and their response to blast load. The paper aims at enhancing the understanding of the dynamic and nonlinear physical response of the structural system. The experimental phase focuses on a one-way arching masonry wall tested in a blast simulator. The test is designed to explore global and local measures of the response of such walls. New experimental data that contributes to the understanding ...

Bridge comprises 785 meters long steel arch spread over river; Bridge designed for blast load in consultation with DRDO; Construction of bridge taken after detailed survey; Bridge constructed to bear earthquakes; work on track laying going on, bridge to be operational soon: Officials Jammu Tawi, Dec 02: The Indian Railways has achieved a major feat by

The moment my thirtysomething friend and I stepped out onto Foch Street in the West 7th corridor, we felt out of place. “There are children everywhere.” I nodded in agreement with her remark, eyeing with concern a young inebriated couple who nearly took a tumble as they crossed the busy intersection. If only a lounge

This paper aims to scrutinise the effectiveness of a re-entrant auxetic honeycomb-core sandwich panel (AHSP) to protect reinforced concrete (RC) slab under close-in and far-field detonations of high explosive. A series of quarter symmetric 3D comprehensive numerical models were developed by using Arbitrary Lagrangian Eulerian (ALE) formulation in LS-DYNA hydrocode. Strain rate effects of the rate sensitive materials were employed in the model to consider dynamic behaviour of the materials during blast loading. The developed numerical model was validated with the documented experimental results...