Abstract
This study attempted to improve the applicability of existing penetration models. First, the correlation of three existing hypervelocity penetration models of Birkhoff et al. (Birkhoff), Abrahamson and Goodier (A-G), and DiPersio, Simon and Merendion (DSM) was analyzed. The A-G model predicted the same penetration depths as Birkhoff and DSM models for jets of uniform and linear velocity distributions. Second, the accuracy of each penetration model was verified to check the differences in the experimental results. Finally, the penetration of jet elements with various velocity distributions was analyzed with finite element analysis. The effective velocity ranges of the analytical models were identified to be approximately 4 km/s for uniform velocity jets, and above 3 km/s for linear velocity profiled jets. This study is expected to provide efficiency to the study of hypervelocity penetration.
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