Author(s)

D. Somasundaram, M. Trabia, B. O’Toole & R. Hixson

Abstract

This paper describes our work to characterize the variables affecting the smoothed particle hydrodynamics (SPH) method in the LS-DYNA package for simulating high-velocity flyer plate impact experiments. LS-DYNA simulations are compared with one-dimensional experimental data of an oxygen-free highconductivity (OFHC) copper flyer plate impacting another plate of the same material and cross section at an impact velocity of 307 m/s. The comparison is made by measuring the velocity of a point on the back surface of the impact plate using the velocity interferometer system for any reflector (VISAR) technique. The Johnson-Cook material model is used in our simulations. Effects of particle density, bulk viscosity, specific heat parameter are studied and discussed. Keywords: smoothed particle hydrodynamics, SPH, flyer plate experiment, LSDYNA, Johnson-Cook material model.

Keywords

smoothed particle hydrodynamics, SPH, flyer plate experiment, LSDYNA,Johnson-Cook material model.