The experimental results show that the failure of specimens will be either hydraulic fracturing or shearing plastic flow, it depends on the initial principal stressratio.
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。
2
It is possible for linear, upwards concave or upwards convex relations between the post-peak Poisson's ratio and the flow compressive stress.
峰后泊松比与轴向压应力之间的关系可能是一条直线，也可能是上凸的，或上凹的。
3
The plasticity and flowstress increase with grain size growth, because the volume ratio of grains on surface layer increases.