关键词: 岩石力学, 非滞后时间段, 频率, 三角波, 正弦波, 毫秒级模拟

Abstract: Taking RMT-150C rock mechanics testing system developed by Institute of Rock and Soil Mechanics，Chinese Academy of Sciences as the main test platform, five aspects of sandstone in the 96 kN peak with different frequencies and wave loadings in Yichang are studied：relationship between vertical force change rate and time, relationship between vertical deformation rate and time, relationship between apparent elastic modulus and time, relationship between the lateral deformation rate and time, relationship between instantaneous Poisson's ratio and time. Influence of different frequencies and waveforms on the relationships above is drawn.On the basis of putting forward the linear relationship between the non-lag period of apparent tangent modulus and vertical force，calculation formulas and parameters of the triangular wave and sine wave are obtained in different frequencies. The comparison of the calculation and measured values shows that the proposed calculation formulas can be well fitted with the changes rule with milliseconds of the deformation rate of different waveforms and different frequencies. On this basis, the paper gives the triangle and sine wave energy calculation methods, and comparative analysis shows that the listed computing formula and method can make accurate prediction of millisecond on the triangle and sine wave at different frequencies and energy value of different loading rates.

Key words: rock mechanics, non-lag time segment, frequency, triangular wave, sine wave, millisecond simulation