本文首次应用应变梯度塑性理论对韧性剪切带进行了理论分析。
In the first time, a theoretical study on ductile shearing bands based upon strain gradient plasticity theory is conducted in this paper.
本文系统地介绍了微细塑性成形方法以及目前较常用的应变梯度塑性理论。
This paper systematically introduces some methods of micro-forming and a universal theory about strain gradient plasticity at present.
基于应变梯度塑性理论，分析了内压作用下厚壁圆筒和球壳的塑性极限荷载。
Plastic limit load of viscoplastic thick-walled cylinder and spherical shell subjected to internal pressure is investigated analytically using a strain gradient plasticity theory.
对这一试验结果，采用梯度塑性理论进行分析，理论解和试验值取得了较好的一致性。
To this result, the theoretical analysis and experimental result reach a good agreement by using the gradient plastic theory.
基于梯度塑性理论，分析了应变软化及真实裂纹扩展阶段的局部化带的张拉位移和转角。
The tensile displacement and angle of rotation of tensile strain localized band are analyzed in strain softening stage and in real crack propagation stage based on gradient-dependent plasticity.
应用应变梯度塑性理论对局部化剪切带内部(塑性)剪应变(率)规律进行了理论分析。
A theoretical analysis of localized strain and strain rate in shear band after localization occurs beyond the peak shear stress is carried out based on the strain gradient plasticity theory.
这一结论不仅与一些文献结果相吻合，而且说明用梯度塑性理论能够近似描述等间距现象。
The present conclusion agrees with some previous experiments. The gradient plastic theory can approximately describe the phenomenon of the same fracture spacing.
因此非常有必要建立一个包含内禀材料长度的微米尺度连续统理论（应变梯度塑性理论）。
Therefore, it is necessary to establish a micron level continuum theory (strain gradient plasticity theory) considering the intrinsic material length.
基于梯度塑性理论，考虑了应变局部化，提出单轴拉伸条件下岩样全程应力—应变曲线解析解。
Analytical solution of complete stress-strain curve of rock specimen in uniaxial tension is proposed based on gradient-dependent plasticity considering strain localization initiated at peak strength.
基于梯度塑性理论，研究了应变软化阶段的刚度劣化对剪切带内部的局部应变及相对剪切位移的影响。
Distributed shear strain and displacement in localized shear band were investigated considering degraded stiffness in the strain-softening process based on gradient-dependent plasticity.
由于微结构效应，基于梯度塑性理论的剪切带内部的最大塑性剪切应变及最高温度的预测值高于经典理论的预测值。
The prediction values of shear strain and temperature in shear band based on gradient-dependent plasticity are higher than those by use of classical elastoplastic theory.
梯度塑性理论可用于研究韧性断层带内部应变、应变率分布规律、断层带错动位移及带内孔隙度分布规律，为韧性断层带定量分析提供了新的手段。
The theory can be used to study the distributed strain, strain rate, porosity and plastic shear displacement in fault band, which presents a new method for quantitative analysis of ductile shear zone.
在经典弹-塑性理论的屈服函数中引入应变梯度及考虑应变率效应的函数。
The second shear strain gradient and the function reflecting the effect of strain rate are introduced into the yield function of classical elastoplastic theory.
在经典弹-塑性理论的屈服函数中引入应变梯度及考虑应变率效应的函数。
The second shear strain gradient and the function reflecting the effect of strain rate are introduced into the yield function of classical elastoplastic theory.
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