The authors examined both experimental and numerical studies on the structural response of high-performance fiber-reinforced cement composite (HPFRCC) panels with a matrix strength of 180 MPa and a high fiber content from 1.0 to 3.0% subjected to projectile impact. The failure mechanism, such as penetration and scabbing, of HPFRCC panels was experimentally investigated according to volume fractions, the thickness of specimens, and impact velocities. The effect of fiber volume fraction and thickness on the compressive and tensile performance of HPFRCCs was also assessed through a comparison with empirical equations. In addition, a finite element model was established by using LS-DYNA to predict the impact behavior of the panels with calibration of a concrete material model based on previous experimental data. The numerical simulations of HPFRCC panels subjected to impact were verified through comparisons with the experimental results. Based on the verified FE model, a parametric study was also conducted and discussed to better understand the mechanical characteristics of HPFRCC panels under impact loading.

作者对基体强度为 180 MPa、纤维含量为 1.0% 至 3.0% 的高性能纤维增强水泥复合材料 (HPFRCC) 板在受到弹丸撞击时的结构响应进行了实验和数值研究。根据体积分数、试样厚度和冲击速度，实验研究了 HPFRCC 板的破坏机制，如穿透和结痂。通过与经验方程的比较，还评估了纤维体积分数和厚度对 HPFRCC 压缩和拉伸性能的影响。此外，通过使用 LS-DYNA 建立有限元模型来预测面板的冲击行为，并根据先前的实验数据校准混凝土材料模型。通过与实验结果的比较，验证了HPFRCC板受到冲击的数值模拟。基于经过验证的有限元模型，还进行了参数研究并进行了讨论，以更好地了解 HPFRCC 板在冲击载荷下的机械特性。