【摘要】 通过开发LS-DYNA程序的用户自定义功能,将混合型混凝土材料动态损伤模型嵌入到该程序中,对钢筋混凝土的侵彻贯穿问题进行了数值模拟研究.数值模拟结果表明,利用该模型能较好地反映脆性材料前表面的锥形开坑、中间穿孔、背面层裂现象以及径向裂纹和环向裂纹的萌生扩展,并获得了混凝土内的拉压损伤分布,计算得到的破坏区域、弹体剩余速度与实验结果一致性较好.更多还原

【Abstract】 Simulation on the perforation of reinforced concrete target is performed by the use of user-defined concrete damage model and a comparison between simulation results and experimental results is performed.The simulated results indicate that it well reflects the cone crater,tunneling and spalling phenomena on the back surface,the formation and evolution of radial and circumferential cracks as well as the compressive and tension damage contours distribution.The destructive region and the predicted velocity are consistent with the experimental results.更多还原