Numerical study of the effect on blast-wave mitigation of the quasi-steady drag force from a layer of water droplets sprayed into a confined geometry

Shibue, Kakeru; Sugiyama, Yoshinobu; Matsuo, Akiko

doi:10.1016/j.psep.2022.02.038

Cited by 11 publications

(1 citation statement)

References 41 publications

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“…1 The concepts of elastic metamaterials 2 and resonant structures embedded in resin matrix 3 to create artificial composite materials are also numerically explored and found to attenuate blast waves in a specific and wider frequency range as well. External measures like using different obstacles based on geometry that can trap shock waves 4 and spraying of water droplets in a confined geometry 5 are also shown to produce blast mitigation effect. In particular, energy absorption features of sandwich constructions and their components have been intensely investigated.…”

Section: Introductionmentioning

confidence: 99%

Sandwich Structures With Bio-Inspired Viscoelastic Optimized Suture Face Sheets for Blast Mitigation

Raut

Patel

Verma

et al. 2023

Jnl of Sandwich Structures & Materials

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In this paper, the performance of a novel bio-inspired face sheet in mitigating the effects of blast loading is investigated. The new design of the face sheet consists of an optimized bio-inspired suture structure sandwiched between two aluminium plates. The suture profile is obtained by performing structural optimization using Genetic Algorithm, wherein the dynamic responses obtained using a novel viscoelastic finite element formulation are used. The performance of this optimized suture-based face sheet is experimentally tested in a vertical shock tube which validates the results obtained using commercial finite element software Abaqus. The hybrid sandwich structure composed of an aluminium honeycomb core sandwiched between the developed face sheets is evaluated numerically for its blast resistance performance. The study shows that the proposed face sheet design, not only reduces the stresses in the face sheets significantly, but also reduces the core stresses compared to conventional aluminium face sheet–based sandwich structures. Several parametric studies are presented for axial and transverse shock loading on this hybrid sandwich structures that give more insight into their wave propagation characteristics.

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