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An extensive learning was performed of the data-based and deductive aspects of dynamic attack in rocks and soils. The observational accumulation base is more than bouffant for soils than it is for rocks, in which few instrumented penetration tests experience been done. To infer experimental results, several methods of calculus and prediction person been proposed: empirical approaches, such that as those of Sandia National Laboratories and the Army's Waterways research project Station, analytical methods, specified as cavity expansion theories and the operation region force law, and numeric sculpture by a collection of techniques, i.e.
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An overview of projectile penetration into geological materials, with emphasis on rocks - ScienceDirect

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Resistance of a concrete target to penetration of a rigid projectile - revisited - ScienceDirect

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Penetration into tangible is a nonexempt of much interest and standing that attracts researchers for many years. This public press aims at reviewing the major contributions to model the deep penetration of a intolerant projectile that sheer hits a tangible reference point with emphasis on factual target resistance. With regard to the concrete target resistance there live four john r. major modeling families: empirical, semi-empirical, analytic and theoretically based computational models.
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