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Estimation of a crater volume formed by impact of a projectile on a metallic target

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Abstract

The crater volume has been an important factor in ballistics and has many influences such as material strength, initial projectile velocity, angle of incidence, and nose shape. The goal of this research is to predict the resulting crater volume of a long rod penetration based on the initial projectile velocity and mass. Mooney’s (Bull Seism Soc Am 64(2):473, 1974) displacement equations were used to calculate the elastic crater volume for a given impulse force, P, varying as a delta function in time on the surface of an isotropic, semi-infinite solid. This estimated elastic volume, Velastic is linearly related to the experimental ballistic volume, Vexperimental by an “energy dissipation factor”, k. Velastic = kVexperimental. The energy dissipation factor “lumps” together elastic and plastic deformation mechanisms. Terminal ballistic data for a steel long-rod projectile into “semiinfinite” steel or aluminum target will be compared to the crater volume calculated through the use of k.

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Acknowledgements

We would like to thank Dr. Karen Wells and Los Alamos National Laboratory for supporting for this research.

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Authors and Affiliations

  1. Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM, 87545, USA

    K. Kline & R. Parker

  2. Mechanical & Aerospace Engineering, New Mexico State University, PO Box 30001/MSC 3450, Las Cruces, NM, 88003-8001, USA

    I. Sevostianov

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  1. K. Kline
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  2. I. Sevostianov
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  3. R. Parker
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Correspondence to K. Kline.

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Kline, K., Sevostianov, I. & Parker, R. Estimation of a crater volume formed by impact of a projectile on a metallic target. Int J Mech Mater Des 4, 375–381 (2008). https://doi.org/10.1007/s10999-008-9061-7

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  • DOI: https://doi.org/10.1007/s10999-008-9061-7

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