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Study on prediction method of parameters behind target of jet under dynamic conditions
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Journal Article
Study on prediction method of parameters behind target of jet under dynamic conditions
2025
Overview
To systematically characterize the post-target behavior of shaped charge jets under dynamic conditions, this study establishes a finite element model for jet penetration through finite-thickness moving targets, elucidating the evolutionary dynamics of jet interaction under lateral disturbances. By integrating virtual origin theory and dimensional analysis, a virtual source parameter is introduced to quantify post-target jet metrics. An engineering predictive model is further developed to describe the residual velocity and post-target diameter of jets under lateral perturbations. Static and dynamic penetration experiments validate the numerical simulations and theoretical framework. Results reveal that residual jet velocity decays exponentially with increasing lateral disturbance, while post-target diameter exhibits exponential growth. Strong agreement among numerical predictions, model outputs, and experimental data confirms the accuracy of the proposed framework. This work provides a validated methodology for assessing the post-target performance of shaped charges in dynamic scenarios.
