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2 损伤模型参数拟合结果

Table 2 Fitting results of damage model parameters

试件编号 D0 α β p R2 SSE YS-80 0.5567 0.4834 3.4620 10.7700 0.9830 0.0092 YS-85 0.6054 0.3105 1.0470 13.7900 0.9763 0.0042 YS-90 0.5912 0.4044 2.2110 13.3800 0.9723 0.0055 YS-95 0.6408 0.2874 1.0340 16.2500 0.9901 0.0005 YS-600 0.7179 0.2488 1.2160 12.4700 0.9918 0.0000 YS-700 0.6010 0.3553 1.2000 13.4500 0.9824 0.0002 YS-800 0.6004 0.3636 1.3000 13.8100 0.9910 0.0001 YS-900 0.5723 0.3820 1.1330 18.1300 0.9991 0.0000