弹体垂直侵彻钢筋混凝土数值模拟

Numerical simulation of projectile perforation reinforced concrete perpendicularly

摘要:

详细总结了Riedel Hiermaier Thoma (RHT)混凝土模型,采用标准立方体单轴拉伸和单轴压缩数值模拟揭示了模型基本特性,并将该模型用于弹体侵彻钢筋混凝土数值模拟,钢筋混凝土靶板前后表面的层裂破坏和内部断裂破碎现象均得到了较好反映,计算得到的弹体残余速度和实测值吻合较好,数值模拟还表明钢筋作用和混凝土模型相似角对弹体残余速度影响较小

Abstract:

This article summarizes the Riedel–Hiermaier–Thoma (RHT) concrete model in detail and demonstrates its basic characteristic by numerical simulation of the single brick element under the uniaxial compression and uniaxial tensile loads. Then the model is applied in the projectile perforation reinforced concrete simulation, both the spallation damage on the front and back face of concrete slab and rupture damage phenomenon in the inner of slab are well presented in the simulation, the residual velocity of projectile predicated by numerical simulation is in good agreement with experimental results reported by Hanchak. Besides, it is also find that there is little influence of the reinforced bar and the similarity angle on deviatoric plane to the residual velocity of projectile in the simulation.