为探究玻璃纤维增强乙烯基酯（GF/VE）复合材料的动态劈裂拉伸力学行为和能量耗散情况，利用分离式霍普金森压杆（SHPB）等装置对5种不同GF含量的GF/VE复合材料进行巴西劈裂实验。借助高速摄像系统记录试样在动态加载中的变形破坏全过程，并分析试样在3种加载气压下（0.2、0.3、0.4 MPa）的能量耗散规律。结果表明：在巴西劈裂实验中，5种GF含量的GF/VE复合材料的入射能、反射能、吸收能及峰值应力均随加载气压的增加而增大。在相同加载气压下，GF/VE复合材料的静动态抗拉强度、吸收能密度和能量利用率在GF质量分数65%时均为最高，而GF质量分数70%时最低，入射能和反射能几乎不受GF含量的影响。研究成果可为GF增强树脂类脆性材料动态劈裂拉伸力学性能研究提供参考。

In order to investigate the dynamic split tensile mechanical behavior and energy dissipation of glass fiber reinforced vinyl ester (GF/VE) composites, Brazilian splitting experiments were carried out on five kinds of GF/VE composite specimens with different glass fiber(GF) contents by using devices such as the split Hopkinson press bar (SHPB). The whole process of deformation and destruction of the specimens under dynamic loading was recorded with the help of a high-speed camera system, and the energy dissipation patterns of the specimens were analyzed under three kinds of loading air pressure (0.2, 0.3, 0.4 MPa) . The results showed that the incident energy, reflected energy, absorbed energy and peak stress of five kinds of GF/VE composites with GF content increased with loading air pressure in the Brazilian splitting experiment. Under the same loading air pressure, the static and dynamic tensile strength, absorbed energy density, and energy utilization rate of the GF/VE composite samples were the highest when the mass fraction of GF was 65% and the lowest when the mass fraction was 70%, and the incident and reflected energies were almost unaffected by the GF content. The research results can provide a reference for the study of dynamic split tensile mechanical properties of GF reinforced resin-based brittle materials.