Numerical Analyses of Local Damage of Concrete Slabs by Normal Impact of Deformable Solid Projectiles

被引:4
作者
Xu, Ling-Yu [1 ]
Cai, Fei [2 ]
Xue, Ying-Ying [3 ]
Takahashi, Chiaki [4 ]
Li, Yong-Yi [1 ]
机构
[1] Nanjing Tech Univ, Coll Transportat Sci & Engn, Nanjing 210009, Jiangsu, Peoples R China
[2] Gunma Univ, Dept Environm Engn Sci, Kiryu, Gunma 3768515, Japan
[3] Earthquake Adm Jiangsu Prov, Nanjing 210014, Jiangsu, Peoples R China
[4] Pacific Consultants Co Ltd, Tokyo 1018462, Japan
基金
中国国家自然科学基金;
关键词
deformable solid projectile; projectile mushrooming; LS-DYNA; RHT concrete model; dose-response relation; PENETRATION; PERFORATION; TRANSITION; PRESSURE; TARGET; TESTS; MODEL; LIMIT; SOFT;
D O I
10.1007/s12205-019-1281-x
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Deformable solid projectiles undergo projectile mushrooming during impact and thus are different from rigid and soft hollow projectiles; however, limited work has been conducted on the impact of deformable solid projectiles on concrete targets. In this study, an explicit dynamic finite element procedure is employed to study nine existing experimental tests on the normal impact of a deformable solid (lead) projectile into a plain concrete (PC) slab. To correctly model the impact, both non-linear material response and progressive finite element erosion have been taken into account for the deformable solid projectile and the PC slab. The numerical results are compared with experimental results in terms of different modes of local damage to the PC slab and the maximum penetration depth of the PC slab. The mechanism of the front cratering, the scabbing, and the perforation of concrete target under the impact of deformable solid projectile and the effect of projectile rigidity on the local damage to the PC slab are investigated. A dose-response relation is used to describe the variation of the maximum penetration depth with the impact velocity. Some model parameters that most affect the simulation results are also highlighted.
引用
收藏
页码:5121 / 5132
页数:12
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