No abstract

No abstract

The paper analyzes the achievements of modern research in the area of increasing the penetration diameter in the operation of shaped charges. The functioning of cumulative charges with various forms of cumulative lining is simulated numerically in Ansys Autodyn software. Ways of further development of the issue and explores the possibilities of functioning of shaped charges with a lining complex conical-ring type are discussed. Proposals for improving the cumulative lining of a complex conical-ring type are advanced, substantiated and numerically modelled.

Based on the review of scientific and technical literature, an analysis is made of the problems of the modern theory of formation, extension and destruction of the shaped jet. The focus of the research is on the kinematics of the formation of a shaped jet based on the approach of operating with the characteristics of a real metal when the velocity vector of the cumulative jet is the result of three vectors: strain, strain and displacement of the shaped jet’s material. The numerical experiment of the functioning of the shaped charge is carried out, and the procedure for evaluating the calculation results is proposed. The obtained data correlate with existing knowledge about the physics of the cumulation process.

As a result of the analysis of the application of numerical modeling in modern studies of the cumulation process, it is proposed to isolate the estimated parameters at the time of the formation of a shaped jet as an effective way to reduce the resource intensity of calculations. The numerical method is used to study the influence of the microstructure of the cumulative lining material on the efficiency of jet formation. The following parameters are proposed: the angle between the reduced velocity vector of the jet head and the charge axis γ, reflecting the efficiency of the deformation of the cumulative jet material, and the collapse angle of the cumulative lining γ′, reflecting the efficiency of the deformation of the cumulative jet material. The results of the calculation correlate with the known data obtained by other methods, and this confirms the prospects of the chosen direction of the research.