Design of multi-layered protection against guided mortar threats through numerical modeling

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dc.contributor.authorThawani, Bonny
dc.contributor.authorLim, Seng Kiat
dc.contributor.authorBrown, Laura
dc.contributor.authorCritchley, Richard
dc.contributor.authorHazael, Rachael
dc.date.accessioned2023-02-03T11:27:19Z
dc.date.available2023-02-03T11:27:19Z
dc.date.issued2023-01-28
dc.description.abstractThe trade – off between protection and weight is a constant consideration when designing a portable protective solution. Greater mobility is a desirable attribute and protection must therefore adapt, prompting a demand for lightweight, simple to construct, low-cost and effective ballistic protection systems. High strength and ductility, wave spreading capability and good energy absorption are key properties for ballistic protection. Four materials, polycarbonate, Kevlar®-epoxy, polyurethane foam, and aluminium alloy, possess these properties and were selected for analysis by numerical simulation. Multi-layered configurations were proven to be an optimal solution, by exploiting the advantages of each material without having large penalties of mass and cost. Numerical modelling using ANSYS AUTODYN® is used to simulate monolithic and multi-layered target configurations, to obtain the penetration mitigation performance. The results are analysed to select configurations based on different requirements, such as lowest cost, lowest mass, best performance, and optimal configuration which balanced the three key parameters mentioned. The optimal configuration of Aluminium, Kevlar-Epoxy, Polyurethane, and Polycarbonate has layers with thickness of 7, 3, 38, 2 mm respectively with a total mass of 7.97 kg, total cost of $39.86 and penetration of 29.34% (14.67 mm). Polynomial relationships between performance and mass/cost are also determined.en_UK
dc.identifier.citationThawani B, Lim SK, Brown L, et al., (2023) Design of multi-layered protection against guided mortar threats through numerical modeling. Defence Technology, Volume 29, November 2023, pp. 55-65en_UK
dc.identifier.issn2214-9147
dc.identifier.urihttps://doi.org/10.1016/j.dt.2023.01.013
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19127
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectHydrocodeen_UK
dc.subjectFragmentationen_UK
dc.subjectHigh velocityen_UK
dc.subjectComposite structuresen_UK
dc.subjectFoamsen_UK
dc.titleDesign of multi-layered protection against guided mortar threats through numerical modelingen_UK
dc.typeArticleen_UK

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