Abstract
The paper presents the calculation technique for static and dynamic perforation of thin high-strength steel plates using different models of material deformation and fracture. The calculations have been performed employing the finite element (FE) method and Johnson-Cook material deformation model. The material parameters are specified for Armox 500T steel. The influence of the indenter shape, loading rate, and contact conditions on the material deformation and fracture is investigated. The distribution fields of strains and stresses at different time points are constructed. The variation in the indenter velocity during the perforation of the plates is determined, and the change in the strain rate of the fracture zone is estimated. The obtained results are used to develop the techniques for testing high-strength steels under static and dynamic perforation. The comparison of the results of experiments and calculations will help to specify the values of the material models’ parameters for modeling high-speed penetration processes.
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