Abstract The design of Brazilian disc sample was used to investigate the tensile properties of rock material in dynamic splitting tests. Two types of samples were used to study the accuracy of the unidirectional strain calculation method for the Brazilian discs, based on the propagation of stress waves at the interface, and the rationality of the results was verified by experiments. The stress-strain curves were determined using the dynamic loading data of the two types of samples, and it was found that the unidirectional strain calculation method was inappropriate for the BD splitting test under dynamic loading conditions. The computational efficiency and precision of using different methods for determining the dynamic Young's modulus-time curves of the samples were evaluated. In addition, the difference in the Young's modulus-time curves for the unidirectional strain and planar strain was also determined. The three stages of the Young's modulus of the Brazilian discs under dynamic loading conditions are obtained, and the failure mechanism of the Brazilian disc is analyzed during the three stages.

中文翻译：

---

IJRMMS-2109-771 – 编辑并通过了关于巴西圆盘岩石材料样品动态行为的实验研究

摘要 利用巴西圆盘试样的设计，研究岩石材料在动力劈裂试验中的拉伸性能。基于应力波在界面处的传播，利用两类样品研究了巴西圆盘单向应变计算方法的准确性，并通过实验验证了结果的合理性。利用两类试样的动态加载数据确定应力-应变曲线，发现单向应变计算方法不适用于动态加载条件下的BD劈裂试验。评估了使用不同方法确定样品的动态杨氏模量-时间曲线的计算效率和精度。此外，Young' 的差异 还确定了单向应变和平面应变的模量-时间曲线。获得了动态加载条件下巴西圆盘杨氏模量的三个阶段，分析了三个阶段巴西圆盘的破坏机理。