Numerical simulation on the damage effect of the blast location and the charge weight on the protective layer of reinforced concrete and its rear facilities
The charge weight carried by the earth penetration weapon (EPW) and the location depth where the explosion can reach after the EPW penetrates the protective structure has a great impact on its damage effect.According to the damage characteristics of reinforced concrete medium under internal blast load, the fluid-structure coupling algorithm is adopted by establishing the finite element models of reinforced concrete and rebar separately.Then the numerical analysis of the damage effect of the charge weight and the location depth of explosion on the concrete protective layer and its rear facilities under the blast load are analyzed.Numerical simulation gives good description of the process of explosion cavity and funnel pit formation.And numerical results show that: Case A with limit invasion of 2.7m and charge weight has better damage effect on the reinforced concrete protective layer with thickness of 3m and 3.5m than Case B with limit invasion of 2.5m and charge weight of 80kg.But the damage effect of Case A is not as good as the latter on the facilities behind the protective layer.
Explosive mechanics Reinforced concrete Damage Numerical simulation
Lin LI Qi-ran SUN Zhi-cheng FENG Yu-xi XIE Tian-xiong LI Yu-xin SUN
National Key Laboratory of Transient Physics, Nanjing University of Scienceand Technology, Nanjing 210094, China
国际会议
2018 International Conference on Defence Technology (2018国际防务技术会议)
北京
英文
571-574
2018-10-21（万方平台首次上网日期，不代表论文的发表时间）