爆炸与冲击2011，Vol.30Issue(2)：127-134,8.
长杆和分段杆侵彻的数值模拟
Numerical simulations on long rods and segmented rods penetrating into steel targets
摘要
Abstract
Numerical simulations were conducted on the penetration of the long rod with the length-radial ratio of 5, the ideal segmented rod and the segmented rod with a carrier tube into semi-infinite steel targets, respectively, by using the software ANSYS/LS-DYNA3D. The Lagrangian method and Johnson-Cook constitutive model were coupled in the numerical simulations. The von Misese stress contours were given at the typical times during the penetration and the penetration performances of these rods were compared. Comparison shows that the dominant contribution to the depth of penetration (DOP) of the segmented rod is due to the phase Ⅲ non-steady stage rather than the phase Ⅱ quasi-steady penetration stage in the long-rod penetration. The interspacing of the segmented rods has a significant impact on the DOP, while the carrier tube only contributes to the increase of the crater diameter.关键词
固体力学/侵彻深度/Johnson-Cook本构模型/分段杆/半无限靶Key words
solid mechanics/depth of penetration) Johnson-Cook model/segmented rod/semi-infinite steel target分类
数理科学引用本文复制引用
郎林,陈小伟,雷劲松..长杆和分段杆侵彻的数值模拟[J].爆炸与冲击,2011,30(2):127-134,8.基金项目
国家自然科学基金项目(10672152) （10672152）
