A void growth model considering the Bauschinger effect (BE) is proposed for ductile mater/Ms sustaining impact loading.Numerical simulations of two high-velocity impact problems are carried out by our newly developed Eulerian programs.The proposed model is tested by a plate impact problem and a qualitative agreement with the experiment is obtained.Then a more complicated problem, a plate impacted by a spherical projectile at a velocity of 6.0 km/s, is simulated.The numerical results are in better accordance with the experimental data when the BE is considered.The proposed model reveaJs that the BE has an obvious effect on the spall process.