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Latin American Journal of Solids and Structures

versão impressa ISSN 1679-7817versão On-line ISSN 1679-7825

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DENG, Jiajie; ZHANG, Xianfeng; LIU, Chuang  e  WANG, Wenjie. Penetration performance of axisymmetric U-shape-nose grooved projectile into aluminum target: Theoretical model and experiment. Lat. Am. j. solids struct. [online]. 2018, vol.15, n.5, e46.  Epub 28-Jun-2018. ISSN 1679-7825.  https://doi.org/10.1590/1679-78254511.

The penetration performance of projectiles is closely related to their nose shape as it influences the kinetic energy penetration of a rigid projectile. One new type of projectile, which is entitled U-shape-nose grooved projectile, is introduced in this study. A theoretical model, which describes the structural characterization of U-shape-nose grooved projectile, is constructed here to investigate the penetration characters into an aluminum target. Moreover, comparative penetration experiments were conducted to investigate the penetration performance of U-shape-nose grooved projectile. Effects of characteristic parameters and shape optimal conditions of the U-shape-nose grooved projectile on the penetration performance are analyzed with the theoretical model validated by the experimental results. It has been proved that U-shape-nose grooved projectile has a more excellent penetration performance than the ogive-nose projectile based on comparison between the results of experimental and theoretical model. The projectile with U-shape-nose grooves sharpens the nose of the projectile and changes the failure mode of target during penetration, which has advantages of decreasing penetration resistance and enhancing the depth of penetration.

Palavras-chave : Penetration; U-shape-nose grooved projectile; Aluminum target; Localized interaction models; Depth of penetration (DOP).

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