This paper examines the dynamic loading of two types of heterogeneous barriers: metal-ceramic (B4C + steel 4340) in contact with a high-hardness rod and metallic (steel 4340 + aluminum alloy Al 7075) in contact with a spherical impinging body made of highly rigid steel. The impact velocities ranged from 200 to 2000 m/s. The behavior of a heterogeneous material was described using two approaches: the additive mixture model and direct numerical modeling. Based on the analysis of the residual velocity of the rod after interaction with an obstacle, the ultimate failure strains (tensile, compressive, and shear) of the heterogeneous materials were compared, depending on the properties and volume concentration of the components. This resulted in the first relationship that links the ultimate failure strain of a heterogeneous material with the ultimate failure strains and concentration of its components
Author Biography
Aleksandr Evgen'evich Kraus, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
Cand. Sc. (Physics and Mathematics), Khristianovich Institute of Theoretical and Applied Mechanics
