volumetric strain

Research on Annual Variation Reason of the Sacks Volumetric Strain

昌平台Sacks体应变仪观测曲线年变现象成因研究

Based on the test results of sand, mechanics of internal parameters ( plastic volumetric strain and plastic deviator strain) depending on stress path is explained. General equation expressing hardening parameter independent of stress path is proposed.

在分析砂土试验结果的基础上，揭示了基本硬化内参量（塑性体积应变、塑性剪应变）变化的应力路径相关性，提出了应力路径无关硬化参量的一般表达式。

The variation of Lode stress angle usually enhances the soil volumetric strain or pore pressure.

劳台（Lode）应力角的变化常会引起土的体应变或孔压的增加。

The test results indicate that the modulus of deformation and the strength of samples are reduced by wetting, that slaking deformations consists of either slaking volumetric strain or slaking deviator strain and that the slaking deformation is reduced with compacting factor of the samples is increased.

取得的湿化变形试验成果表明，湿化使土样的变形模量和强度均有所降低；湿化变形不仅包括湿化体应变，而且包括湿化偏应变；

The location of shear strain rate localization coincides in position with the location of volumetric strain rate, which is the actual failure zone of rock.

剪切应变率（或应变）局部化区域与体积应变率（或应变）的位置重合，局部化区域就是岩样最终的破坏位置。

We show that unelastic volumetric strain is directly prepositional to the number of micro-cracks, which is observed in laboratory experiments.

从理论上得出了岩石非弹性体积应变与微裂缝数目成正比，从而解释了实验室研究的结果。

The cumulative volumetric strain just reflects effect of all above factors with the increase of cyclic times.

随着循环作用次数的增加，不断累积的体应变恰恰能够反映出上述因素的综合影响。

Higher DA results in higher values of shear strain and volumetric strain in shear band.

扩容角越大,剪切带最终可以获得越来越高的剪切应变和体积应变.

In model 2, the material parameters are independent of the plastic volumetric strain but is related to the temperature change that causes thermal softening, the model is used inside the fault zone.

模型2用来模拟断层物质，其强度只同热状态有关而与塑性变形无关。