TY - JOUR
T1 - Numerical study on craters and penetration of concrete slab by ogive-nose steel projectile
AU - Wang, Z.L.
AU - Li, Y.C.
AU - Shen, R.F.
AU - Wang, Jian-Guo
PY - 2007
Y1 - 2007
N2 - In the design of defense structures, concrete slabs are often used to provide protection against incidental dynamic loadings such as the impact of a steel projectile. In the present study, the Taylor-Chen-Kuszmaul (TCK) continuum damage model is further improved and successfully implemented into the dynamic finite element code, LS-DYNA, with erosion algorithm. The numerical predictions of impact and exit craters of concrete slab as well as the residual velocity of projectile using the newly-implemented numerical tool show good agreement with experimental observations. The performance of the modified TCK model is evaluated by comparing with the material Type 78 (Mat _ Soil _ Concrete) and Type 111 (Mat-Johnson-Holmquist-Conerete) available in LS-DYNA. The effect of CRH (caliber-radius-head) ratio of the ogive-nose projectile on the impact crater is also investigated using the new numerical tool. Finally, the maximum penetration depth of steel projectile into a concrete slab is studied and an empirical formula is proposed. (c) 2006 Elsevier Ltd. All rights reserved.
AB - In the design of defense structures, concrete slabs are often used to provide protection against incidental dynamic loadings such as the impact of a steel projectile. In the present study, the Taylor-Chen-Kuszmaul (TCK) continuum damage model is further improved and successfully implemented into the dynamic finite element code, LS-DYNA, with erosion algorithm. The numerical predictions of impact and exit craters of concrete slab as well as the residual velocity of projectile using the newly-implemented numerical tool show good agreement with experimental observations. The performance of the modified TCK model is evaluated by comparing with the material Type 78 (Mat _ Soil _ Concrete) and Type 111 (Mat-Johnson-Holmquist-Conerete) available in LS-DYNA. The effect of CRH (caliber-radius-head) ratio of the ogive-nose projectile on the impact crater is also investigated using the new numerical tool. Finally, the maximum penetration depth of steel projectile into a concrete slab is studied and an empirical formula is proposed. (c) 2006 Elsevier Ltd. All rights reserved.
U2 - 10.1016/j.compgeo.2006.09.001
DO - 10.1016/j.compgeo.2006.09.001
M3 - Article
SN - 0266-352X
VL - 34
SP - 1
EP - 9
JO - Computers and Geotechnics
JF - Computers and Geotechnics
IS - 1
ER -