TY - JOUR

T1 - Numerical simulations of impact Taylor tests

AU - Volkov, G. A.

AU - Bratov, V. A.

AU - Borodin, E. N.

AU - Evstifeev, A. D.

AU - Mikhailova, N. V.

PY - 2020/7/6

Y1 - 2020/7/6

N2 - The finite element method is used for simulation of productivity in dynamic Taylor tests. Two different approaches for prediction of plastic deformation of finite element method is employed for numerical simulation of yielding under dynamic impact Taylor tests. Obtained results of modeling are compared with experimental ones. These are Johnson-Cook model and von Mises yielding criterion enhanced by incubation time approach. The simulation results have shown that the simplest method based on von Mises plasticity model provides good coincidence with experimental profiles of specimen shape in the course of deformation. The shortcoming is that the correct value of yield stress is depending on the loading rate and should be known beforehand. Thus, if there was a method to predict the value of dynamic yield stress to be used within von Mises criterion then this simple approach could be the optimal choice for simulation of dynamic plasticity in conditions of Taylor test.

AB - The finite element method is used for simulation of productivity in dynamic Taylor tests. Two different approaches for prediction of plastic deformation of finite element method is employed for numerical simulation of yielding under dynamic impact Taylor tests. Obtained results of modeling are compared with experimental ones. These are Johnson-Cook model and von Mises yielding criterion enhanced by incubation time approach. The simulation results have shown that the simplest method based on von Mises plasticity model provides good coincidence with experimental profiles of specimen shape in the course of deformation. The shortcoming is that the correct value of yield stress is depending on the loading rate and should be known beforehand. Thus, if there was a method to predict the value of dynamic yield stress to be used within von Mises criterion then this simple approach could be the optimal choice for simulation of dynamic plasticity in conditions of Taylor test.

KW - STRESS

UR - http://www.scopus.com/inward/record.url?scp=85088270824&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1556/1/012059

DO - 10.1088/1742-6596/1556/1/012059

M3 - Conference article

AN - SCOPUS:85088270824

VL - 1556

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012059

T2 - 34th International Conference on Interaction of Intense Energy Fluxes with Matter, ELBRUS 2019

Y2 - 1 March 2019 through 6 March 2019

ER -