To simulate the deformation of soils in fill construction, it is necessary to build up the constructive model under the stress path of constant ratio of principal stress.
为了模拟填土工程中土体的变形，需要建立在等主应力比应力路径下的本构模型。
To increase component of grinding force ratio can increase principal stress extreme values in grinding stress field. Materials can be removed by brittle fracture.
粗加工中，增加磨削分力比可以增大磨削应力场中的主应力极值，有助于材料的脆性去除。
The experimental results show that the failure of specimens will be either hydraulic fracturing or shearing plastic flow, it depends on the initial principal stress ratio.
研究结果表明，在不同起始主应力比条件下，试件可以表现为水力劈裂破坏，也可以为剪切塑流破坏。
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