TY - GEN

T1 - Simulation of ceramics fracture due to high rate dynamic impact

AU - Kazarinov, N.A.

AU - Bratov, V.A.

AU - Petrov, Y.V.

PY - 2015

Y1 - 2015

N2 - In this paper dynamic fracture process due to high-speed impact of steel plunger into ceramic sample is simulated. The developed numerical model is based on finite element method and a concept of incubation time criterion, which is proven applicable in order to predict brittle fracture under high-rate deformation. Simulations were performed for Zr02(Y203) ceramic plates. To characterize fracture process quantitatively fracture surface area parameter is introduced and controlled. This parameter gives the area of new surface created during dynamic fracture of a sample and is essentially connected to energetic peculiarities of fracture process. Multiple simulations with various parameters made it possible to explore dependencies of fracture area on plunger velocity and material properties. Energy required to create unit of fracture area at fracture initiation (dynamic analogue of Griffith surface energy) was evaluated and was found to be an order of magnitude higher as comparing to its static value.

AB - In this paper dynamic fracture process due to high-speed impact of steel plunger into ceramic sample is simulated. The developed numerical model is based on finite element method and a concept of incubation time criterion, which is proven applicable in order to predict brittle fracture under high-rate deformation. Simulations were performed for Zr02(Y203) ceramic plates. To characterize fracture process quantitatively fracture surface area parameter is introduced and controlled. This parameter gives the area of new surface created during dynamic fracture of a sample and is essentially connected to energetic peculiarities of fracture process. Multiple simulations with various parameters made it possible to explore dependencies of fracture area on plunger velocity and material properties. Energy required to create unit of fracture area at fracture initiation (dynamic analogue of Griffith surface energy) was evaluated and was found to be an order of magnitude higher as comparing to its static value.

KW - MECHANICAL-PROPERTIES

U2 - 10.1088/1742-6596/653/1/012050

DO - 10.1088/1742-6596/653/1/012050

M3 - статья в сборнике материалов конференции

T3 - Journal of Physics Conference Series

BT - XXX INTERNATIONAL CONFERENCE ON INTERACTION OF INTENSE ENERGY FLUXES WITH MATTER (ELBRUS 2015)

PB - IOP Publishing Ltd.

Y2 - 1 March 2015 through 6 March 2015

ER -