CAJ | 학술논문

基于侵彻试验，运用 LY-DYNA 软件，有限元法和光滑粒子法相结合，采用混凝土连续帽盖模型，对12．7 mm穿甲弹侵彻小直径钢管约束混凝土厚靶机理进行了数值模拟研究。研究表明：数值模拟结果与侵彻试验吻合较好，可较好地反映钢管约束混凝土靶核心混凝土侧面环向裂纹；钢管对核心混凝土的约束作用主要发生在弹丸扩孔过程；核心混凝土侧面环向裂纹的形成是入射压缩波与靶体背面反射拉伸波及钢管约束效应共同作用的结果；钢管约束混凝土靶的抗侵彻能力优于无钢管约束混凝土靶。
기우침철시험，운용 LY-DYNA 연건，유한원법화광활입자법상결합，채용혼응토련속모개모형，대12．7 mm천갑탄침철소직경강관약속혼응토후파궤리진행료수치모의연구。연구표명：수치모의결과여침철시험문합교호，가교호지반영강관약속혼응토파핵심혼응토측면배향렬문；강관대핵심혼응토적약속작용주요발생재탄환확공과정；핵심혼응토측면배향렬문적형성시입사압축파여파체배면반사랍신파급강관약속효응공동작용적결과；강관약속혼응토파적항침철능력우우무강관약속혼응토파。
Based on penetration tests,the penetration mechanism of steel tube confined concrete targets against 12.7 mm armor piercing projectile (APP)was simulated with LY-DYNA software,the finite element-smooth particle hydrodynamics method and the CSCM_CONCRETE model.The results showed that the simulation results agree well with the test data,they can better reflect the hoop cracks on side faces of the steel tube confined concrete;the confinement effect of steel tube on the confined concrete inures during the projectile expanding;the formation of the hoop cracks on side faces of the confined concrete is the inter-action results of the incident compression wave,reflected stretching wave from target back face and the confinement of the steel tube;the anti-penetration ability of the steel tube confined concrete target is higher than that of the normal concrete target without steel tube confining.