Influence of Striker Rotation on the Process of Normal Interaction with Multilayer Barriers

Abstract

The normal interaction of a steel striker with a composite metal-ceramic barrier is modeled numerically using the finite element method. The barrier consists of the following materials: boron carbide (B4C), aluminum, and orthotropic organoplastic. The behavior of metallic materials and ceramic B4C is described by an elastic-plastic model. The fracture criterion for metallic materials is the limiting value of the plastic strain intensity. The ceramic fracture is described using the deformation criterion accounting for different strengths in compression and tension. The behavior of the orthotropic composite is modeled as elastic-brittle, and the fracture of the organoplastic is described using the second-degree Hoffmann tensor-polynomial criterion. Numerical experiments are carried out using the software complex EFES. The model for boron carbide behavior during impact is validated. The influence of the striker rotation and arrangement of materials in the barrier on its protective properties is investigated.