动能弹丸侵彻SFRC材料的显式动力有限元分析  

Finite Element Analysis of the Kinetic Energy Projectile Penetrating SFRC Target

作　　者：纪冲[1] 龙源[1] 万文乾[1] 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007

出　　处：《弹箭与制导学报》2005年第3期45-48,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：爆炸灾害预防;控制国家重点实验室开放基金资助项目(KFJJ03-5)

摘　　要：应用显式动力有限元程序,对动能弹丸侵彻钢纤维混凝土(SFRC)进行了数值计算分析,弹丸作为刚体处理。为了描述钢纤维混凝土的非线性变形及断裂特性,计算中引人了Ho lm qu ist-Johnson-Cook累积损伤材料模型。侵彻深度计算结果与在Φ14.5mm弹道炮上所获得的实验数据相吻合,并很好地模拟了在侵彻过程中钢纤维混凝土靶的成坑、层裂现象。在此基础上分析了钢纤维混凝土这种新型复合材料抗侵彻性能的影响因素。Explicit finite element code was applied to simulate the steel tiber reinforced concrete （SFRC） target penetrated by kinetic energy projectile, where the projectile was considered as rigid. To describe nonlinear deformation and fracture characteristics of SFRC, Holmquist-Johnson-Cook constitutive relations and damage model were incorporated into computations. The numerical results of penetration depth were in good agreement with recent experimental results obtained from Φ14. 5mm gun. The crater formation, spall of SFRC target in the process of penetration was simulated very well. The feasibility and validity of applying the HJC concrete model to simulate such problem as penetration in SFRC have also been approved. The factors effecting on anti-penetration property of SFRC were analyzed.

关 键 词：钢纤维混凝土 侵彻 有限元法 侵彻深度 韧度 

分 类 号：O385[理学—流体力学]