3-D hydrocode simulation on the perforation and penetration of reinforced concrete target has been performed. The simulation aims to examine the influence of the following constitutive models for concrete on a projectile's residual velocity: (1) Constant-Yield Strength. (2) Pressure-Dependent Yield Strength. (3) Pressure. Dependent Yield Strength + Fracture Damage + Strain-Rate Hardening. In the simulation, steel ogival-nose projectile with a diameter of 25.4mm and a mass of 0.5 kg is fired against 406.4 x 406.4 x 178mm reinforced concrete target with striking velocity ranging from 300m/s to 1000m/s. The results obtained from the simulation are compared with experimental residual velocities and post-test damage results. The result from the constitutive model that includes strain-rate and damage with a pressure dependent yield surface shows relatively good agreement with experimental residual velocities. The damage contours at the impact and exit surface from the simulation are also consistent with the post-test damage results.
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机译：已经进行了对钢筋混凝土靶的穿孔和渗透的3-D流体仿真。仿真旨在检测以下本构型模型对混凝土的影响，对射弹的残余速度：（1）恒产强度。 （2）压力依赖性屈服强度。 （3）压力。依赖性屈服强度+断裂损伤+应变率硬化。在仿真中，直径为25.4mm和0.5kg的钢初始鼻射精，以406.4 x 406.4 x 178mm钢筋混凝土靶标，引入速度范围为300m / s至1000m / s。将从模拟中获得的结果与实验残留速度进行比较和测试后损伤结果。包括应变率和压力依赖性屈服表面的损伤的构成模型的结果表现出与实验性残余速度相对较好的一致性。从模拟的冲击和出口表面处的损伤轮廓也与测试后损伤结果一致。
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