Study of deformation rate of sandstone under dynamic loading and energy millisecond simulation
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Study of deformation rate of sandstone under dynamic loading and energy millisecond simulation
Vol. 35, Issue 12, (2014)
作者机构:
三峡大学 三峡库区地质灾害教育部重点实验室,湖北,宜昌,443002
作者简介:
基金信息:
DOI:
CLC:TU443
Online First:15 December 2014,
Published:2014
稿件说明:
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LIU Jie, HU Jing, LI Jian-lin, et al. Study of deformation rate of sandstone under dynamic loading and energy millisecond simulation[J]. 2014, 35(12).
DOI:
LIU Jie, HU Jing, LI Jian-lin, et al. Study of deformation rate of sandstone under dynamic loading and energy millisecond simulation[J]. 2014, 35(12).DOI:
Study of deformation rate of sandstone under dynamic loading and energy millisecond simulation
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.