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On the sensitivity of a class of finite-deformation high strainrate ballistic models to constitutive parameter uncertainty

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Abstract

There exist numerous constitutive parameters in models used for the prediction of high strain-rate responses of metallic materials in the finite-deformation regime. Each of these parameters can possess various degrees of uncertainty, possibly due to (a) error in experimental measurements (b) a lack of consistent production methods or (c) the acquisition of data from different manufacturers. This communication investigates the overall system sensitivity that results, due to constitutive parameter uncertainty, when employing the commonly used Johnson-Cook class of high strain-rate ballistic models.

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  1. Department of Mechanical Engineering, University of California, 6195 Etcheverry Hall, 94720-1740, Berkeley, CA, USA

    T. I. Zohdi

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  1. T. I. Zohdi
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Zohdi, T.I. On the sensitivity of a class of finite-deformation high strainrate ballistic models to constitutive parameter uncertainty. Int J Fract 119, 47–52 (2003). https://doi.org/10.1023/A:1023908426462

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