Abstract
With the advancement of weapon systems, high-strength concrete (HSC) has been extensively utilized in protective engineering. To investigate the damage characteristics of HSC under impact resistance, this study first conducted Split Hopkinson Pressure Bar (SHPB) tests on HSC, along with cyclic loading and unloading tests. Based on the test data of SHPB and cyclic loading and unloading, the original Holmquist-Johnson-Cook (HJC) model was adjusted accordingly. Additionally, tungsten alloy bullet penetration tests on concrete plates with different initial velocities were performed to measure the depth of penetration (DOP) and crater area corresponding to each velocity. A numerical model was then established using Abaqus software. The test results and numerical simulations were compared and analyzed, demonstrating that the predicted results closely matched the test, with a DOP error margin of less than 10 %. This confirmed the feasibility and accuracy of the modified model and its parameters. Finally, the results of numerical simulation were used to analyze the mechanical properties of HSC during impact resistance.
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