不同应力上限和加载速率下的黄砂岩疲劳特性研究
肖峰,曹平,刘智振,张子洋

Study on Fatigue Characteristics of Yellow Sandstone Under Different Stress Upper Limits and Loading Rates
Feng XIAO,Ping CAO,Zhizhen LIU,Ziyang ZHANG
表1 疲劳加载试验参数及应变结果
Table 1 Fatigue loading test parameters and strain results
试件编号下限应力比上限应力比疲劳速率/(N·s-1疲劳寿命/次控制点应变/%破坏点应变/%相对差值/%
YS-800.500.805004101.15401.1346-1.68
YS-850.500.855002381.15361.1220-2.74
YS-900.500.905001721.15321.1253-2.42
YS-950.500.95500791.15171.16701.33
YS-6000.500.9560061.15171.16531.18
YS-7000.500.95700101.15171.16180.87
YS-8000.500.95800181.15171.19703.93
YS-9000.500.95900641.15171.16911.51