装配式组合防爆墙抗高速破片侵彻性能研究  

ANALYSIS ON PENETRATION CHARACTERISTICS OF ASSEMBLED BLAST-RESISTANCE WALL IMPACTED BY FRAGMENTS WITH HIGH VELOCITIES

作　　者：姜鹏飞[1] 唐德高[1] 伍俊[2] 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007 [2]清华大学土木工程系

出　　处：《振动与冲击》2008年第7期131-134,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金资助(项目批准号:50578082)

摘　　要：为研究一种新型的装配式双层钢板组合防爆墙结构的破坏分级指标,依据CONWEP程序计算所得的不同恐怖爆炸威胁等级下破片的特征参数,采用LS-DYNA软件,对组合防爆墙及等厚混凝土结构抗单破片及多破片高速法向撞击时的侵彻性能进行对比研究,分析了破片在防爆墙中的侵彻过程,得到了4种类型破片法向撞击下两种防爆墙的破坏特征以及破片侵彻深度、速度、加速度等特性参数的变化规律。分析表明,组合防爆墙抗破片侵彻性能明显优于混凝土结构,在研究结构破坏分级指标时须考虑多破片的破坏效应。To investigate the damage levels of newly designed assembled blast-resistance wall, penetration effects of single and multiple fragments of vehicle bombs are analyzed with LS-DYNA software. The feature parameters of fragments have been calculated in advance with CONWEP programme referring to different threatening levels of vehicle bombs. The performance of assembled wall under fragment impact loadings is compared with that of concrete structure with equal thickness. The penetration process in walls is discussed. The damage pattern of walls, penetration depth, penetration velocity and penetration acceleration of fragments are analyzed. The analysis indicates that the properties of assembled wall resisting impact loadings of fragments are superior to those of the concrete structure. The damage effects on structures of multiple fragments impact loadings should be considered when discussing damage levels.

关 键 词：爆炸力学 侵彻 数值模拟 破片 防爆墙 汽车炸弹 

分 类 号：TJ414.1[兵器科学与技术—火炮、自动武器与弹药工程] O385[理学—流体力学]