摘要
本文基于修正的Kong-Fang混凝土材料模型和流-固耦合算法,开展了弹壳厚度对弹体爆炸毁伤破坏效应的数值模拟研究。首先,通过预制孔装药爆炸试验和弹体先侵彻后爆炸试验对混凝土材料模型参数选取的准确性进行验证;然后考虑不同弹壳厚度,设置7组工况进行爆炸过程的数值模拟,探讨了弹壳厚度对CF120超高性能混凝土靶损伤区域、开坑尺寸以及内部荷载传播衰减的影响。数值计算结果表明:随着弹壳厚度的增加,靶体损伤区域增加明显;爆炸过程考虑弹壳后开坑直径和开坑深度与不考虑弹壳爆炸相比均有不同程度增加;以装药直径98 mm、装药长度1100 mm为例,弹壳厚度在5~10 mm范围内对爆炸性能提高不明显。
Based on the modified Kong-Fang concrete model and the fluid structure interaction algorithm,the numerical simulation on damage and failure of concrete considering projectile cast thickness subjected to explosion was conducted.Firstly,the accuracy of parameters selection of the concrete material model was verified by precast hole explosion test and projectile penetration followed by explosion;Then,7 groups of working conditions were set for numerical simulation of explosion process considering different projectile cast thickness,and the influence of projectile cast thickness on damage area,crater size and load propagation attenuation of CF120 ultra-high performance concrete target was discussed.The numerical results showed that the damage area of the target increases obviously with the increase of shell thickness;The crater diameter and crater depth after considering the projectile cast increased to different degrees compared with that without it;Taking the charge diameter of 98 mm and the length of 1100 mm,the explosive performance is not significantly improved when the thickness of the projectile cast is between 5 mm and 10 mm.
作者
于卫涛
王银
吴孝鑫
孙留洋
姜雅婷
杨涛春
Yu Weitao;Wang Yin;Wu Xiaoxin;Sun Liuyang;Jiang Yating;Yang Taochun(Bureau of Housing and Urban-rural Development of Binzhou,Binzhou 256600,Shandong,China;School of Civil Engineering and Architecture,University of Jinan,Jinan 250022,China;Tongyuan Design Group Co.,Ltd.,Jinan 250101,China)
出处
《科技通报》
2024年第10期90-98,共9页
Bulletin of Science and Technology
基金
山东省高等学校青创科技支持计划(TJY2303)
济南大学新引进人才科研项目(XBS2470)
济南城建集团有限公司资助项目(W2023161)。
关键词
爆炸
弹壳厚度
数值模拟
损伤
explosion
projectile cast thickness
numerical simulation
damage
