利用新的含微孔材料模型对塑性材料局部剪切失稳进行了分析。
By means of a new void - containing material model, analysis of shear localization for plastic materials is carried out.
针对单个粒子相同入射速度不同入射角度的碰撞条件，探讨粒子与基体的结合强度、侵彻深度以及绝热剪切失稳的发生条件。
The join strength, penetration depth and condition of emerging adiabatic shear instability are discussed with single particle of uniform speed and different angle.
建立了矿井围岩-断层系统的准静态形变平衡方程，将呈剪切破裂形式的断层失稳过程归结为折迭突变模型。
The equilibrium equation of surrounding rock mining fault system is established. The fault destablizing process with shear failure pattern belongs to fold catastrophe model.
又对单轴压缩岩样剪切破坏进行了分析，得到了其失稳判据。
Next, analysis of uniaxial compression tests for rock specimens subject to shear failure is conducted and the criterion of instability is deduced.
岩样的快速回跳条件就是系统(由剪切带及带外弹性岩石构成)的失稳判据。
It is found that the criterion is in agreement with the criterion of instability for the system composed of shear band and elastic rocks outside the band.
本文基于岩体节理断裂扩展和剪切滑移两种失稳破坏机制，运用统计断裂力学方法建立了两种破坏方式下节理岩体强度的理论表达式。
In the paper, on the basis of two rupture modes-fracture propagation and shearing slide, the strength of jointed rock is derived by use of statistical fracture mechanics.
实验中通过在剪切方向上叠加正弦波状的位移扰动，研究了剪应力扰动对断层粘滑失稳的影响。
In the experiments, a small-amplitude sine wave of displacement is modulated to shear loading to study the effects of shear stress perturbation on stick-slip instability.
由于剪切定位在岩样剪切带内和带外弹性岩石组成的系统的失稳判据研究。
The instability criterion due to shear localization in rock specimen system composed of shear band and elastic rock outside the band is studied.
在节理破碎岩体中，隧道的失稳破坏往往是由于岩块沿节理面的剪切滑移造成的。
In the jointed fractured rock mass, the instability of tunnel is always because the blocks slip along the joint surface.
运用岩石破裂与失稳过程分析RFPA2D系统，对岩石剪切破裂过程进行了数值模拟研究。
By using rock failure process Analysis code (RFPA2D), the slip failure process of rock sample is numerically studied.
运用岩石破裂与失稳过程分析RFPA2D系统，对岩石剪切破裂过程进行了数值模拟研究。
By using rock failure process Analysis code (RFPA2D), the slip failure process of rock sample is numerically studied.
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