A simplified formula to estimate the load history due to ballistic impacts with bullet splash. Development and validation for finite element simulation of 9x21mm full metal jacket bullets

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Published Sep 22, 2022
DOI https://doi.org/10.3221/IGF-ESIS.62.41

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Riccardo Andreotti
Callens® AREA3, Via Merini 37 21100 Varese, Italy; Dipartimento di Meccanica, Politecnico di Milano, via La Masa 1, 20156 Milano, Italy
Andrea Casaroli
Dipartimento di Meccanica, Politecnico di Milano, via La Masa 1, 20156 Milano, Italy
Mauro Quercia
Callens® AREA3, Via Merini 37 21100 Varese, Italy
Marco V. Boniardi
Dipartimento di Meccanica, Politecnico di Milano, via La Masa 1, 20156 Milano, Italy

Abstract

An original simplified formula is proposed to estimate the load history caused by ballistic impacts characterized by the so-called bullet splash phenomenon, consisting in the complete bullet fragmentation with no penetration of the target. The formula is based on the progressive momentum variation of the mass of the bullet impacting on a planar plate normal to the impact direction. The method aims at creating a simplified approach to assess the response of structures by means of explicit finite element simulations without the need of modelling the interaction between impactor and target. The results demonstrate that the proposed method can be used to estimate the forces generated by bullet-splash phenomena of 9x21mm full metal jacket bullets and effectively applied to finite element simulations allowing significant reductions in computational cost.

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    Issue
    Vol. 16 No. 62 (2022): October 2022
    Section
    Analytical, Numerical and Physical Models

    How to Cite

    Andreotti, R. (2022) “A simplified formula to estimate the load history due to ballistic impacts with bullet splash. Development and validation for finite element simulation of 9x21mm full metal jacket bullets”, Frattura ed Integrità Strutturale, 16(62), pp. 602–612. doi: 10.3221/IGF-ESIS.62.41.
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