在 Hopkinson压杆上利用预留间隙法对花岗岩材料实施了高应变率动态实验 ,有效地避免加载波上升沿对这类脆性材料实验精度的影响 ,发现花岗岩材料有很明显的应变率硬化效应和损伤软化效应。并初步研究了花岗岩材料在动态和静态重复加载条件下的力学行为 On the Hopkinson pressure bar, a high strain rate dynamic experiment was carried out on the granite material by using the reserved gap method to effectively avoid the influence of the rising edge of the loading wave on the experimental precision of the brittle materials. The granite material has obvious strain rate hardening effect and Damage softening effect. The mechanical behavior of granite under dynamic and static loading was studied