An analytical approach for modelling hypervelocity impact by long rod

Hydrodynamic theory of hypervelocity penetration is widely used to describe the penetration of long rods because of its simplicity and computational efficiency. In this paper, the penetration resistance is evaluated from the crater size generated by hypervelocity impact and is combined with one-dime...

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Bibliographic Details
Published inMechanics research communications Vol. 139; p. 104302
Main Authors Kim, Hyo-Song, Yun, Kumchol, Pak, Yong-Nam, Choe, Chang-Hyon
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2024
Subjects
DOP (Depth of Penetration)
Hypervelocity impact
Layer arrangement
One-dimensional analytical model
Penetration resistance
One-dimensional analytical model
DOP (Depth of Penetration)
Layer arrangement
Hypervelocity impact
Penetration resistance
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Summary:Hydrodynamic theory of hypervelocity penetration is widely used to describe the penetration of long rods because of its simplicity and computational efficiency. In this paper, the penetration resistance is evaluated from the crater size generated by hypervelocity impact and is combined with one-dimensional analytical model to predict DOP (depth of penetration). Then, a computational formulation for change of energy per unit DOP is derived and the influences of different parameters on DOP are analysed. At last, in the multi-layer target, the effect of the layer arrangement is considered from the energetic point of view. The method for determining the effective arrangement of material layers with maximum energy variation is proposed. The validity of our approach is confirmed by comparing our analytical results with the AUTODYN results and literature.
ISSN:0093-6413
1873-3972
DOI:10.1016/j.mechrescom.2024.104302