Numerical simulation on penetration of rod projectile into YB-AD90 ceramic- composite targetZ.F. Sun1, P. Li1, H. Xu2, H.L. He1, Q.Z. Li1, J.X. Peng1 and D.H. Li1
1 National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, 621900 Mianyang, China
2 College of Mathematics and Computer Science, Mianyang Normal University, 621000 Mianyang, China
Published online: 15 September 2009
The depths of penetration and the dynamic processes of rod projectiles (tungsten or steel) into YB-AD90 ceramic-composite targets (45 steel and ceramic) are numerically simulated by Autodyn-2D. In simulation, the JH-2 (Johnson-Holmquist) constitutive model is used for ceramic samples, while Johnson-Cook constitutive model and Mie-Gruneisen equation of state are used for 45 steel and tungsten because metals are assumed not to be damaged under shock compression. The computed results are compared with the experiments for some important features during the dynamic penetration processes such as the shape transformation of projectile head, material fragmentation and penetration path collapse.
© EDP Sciences 2009