提出了岩石失稳破坏应变梯度理论模型。
讨论高阶应变梯度对纳米纤维轴向应变分布的影响。
The influence of high-order gradient of strain on static analysis of nanofibers is discussed.
其次主要介绍了不含高阶应力的一类应变梯度理论及其应用；
Then, we introduce a strain gradient theory and its main applications, in which no high-order stresses are included.
主破裂发生在应变及其梯度相对都较低的一个高应变梯度区。
Main fracture occurs in the high gradient area where the strain and gradient are relatively lower.
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.
本文讨论了样品表面层有微观应变梯度时X射线衍射线形分析的方法。
This paper deals with X-ray diffraction profile analysis for the sample with a micro-strain gradient in its surface layer.
本文提出基于应变梯度的损伤模型，并用于材料局部化损伤模拟预测中。
The strain gradient enhanced damage model based on strain gradient theory and continuum damage mechanics is established and applied to forecasting the localized damage in rock material.
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.
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.
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.
采用基于应变梯度理论的假设应变有限元方法研究了微尺度梁弯曲的尺寸效应。
An assumed strain finite element method based on the theory of strain gradient was proposed to explore the size effect that frequently exhibited in micro-beam bending.
提出了一种用微弯曲实验测定材料的与应变梯度塑性相联系的内禀长度的新方法。
Therefore, it is necessary to establish new constitutive models—strain gradient plasticity theories which possess the intrinsic material length.
另一个为考虑应变梯度效应的模型，该模型在已有的材料特征基础上引入了尺度效应。
Two kinds of size effects on micro deep drawing are investigated, which can be explained by surface layer model and strain gradient model.
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.
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.
因此，应变梯度，因此有关梯度的力学性能有着密切的联系氢气所产生的非均质性非均匀干燥在一层的材料。
So, the strain gradients and consequently the related gradients of mechanical properties are closely linked to hydric heterogeneities generated by non-uniform drying in the layer of material.
根据非局部连续介质模型，提出了一维二阶剪切应变率梯度格式。
One dimensional shear strain rate gradient formation of the second order is proposed based on the non-local continuum model.
指出了其基本的问题是其中应力(应变)或者其增量是否为一有势场的梯度矢量。
The keystone is whether or not there is unique potential field in which the stresses (strains) or their increments are its gradient vectors.
根据高分子材料中三维应力应变关系建立了三维传递矩阵数学模型，模拟梯度聚氨酯在不同入射角下的吸声性能。
A three-dimensional transfer matrix model was presented to simulate the sound absorption coefficients of the graded polyurethanes based on relation of stress and strain of polymers.
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.
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.
建立了局部(塑性)剪切变形梯度与局部(塑性)剪切应变分布之间的关系及速度梯度与应变率分布之间的关系。
The relation between the gradient of local (plastic) shear deformation and the local (plastic) shear strain and that between the gradient of velocity and the strain rate were established.
本文讨论了大梯度应变区电阻应变片的设计问题。
The design of strain gages in regions of high strain gradient is discussed.
对该模型施加适当的约束和载荷，通过预前共轭梯度法，计算得到了轴类零件在常见工况-弯曲和扭转载荷作用下的位移、应力、应变等力学特性。
Results of displacement, stress and strain of the shaft under the common loads of bend and torsion are obtained by Pre-condition conjugate gradient method.
并发现在平面应力状态下，梁的梯度效应略强于平面应变状态。
Results also show that the scale effect in plane stress state is slightly stronger than that in plane strain state.
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.
文章对含i型裂纹的正交各向异性功能梯度材料板沿其板厚的弹性常数表达式呈指数函数变化时的应力-应变场进行分析。
In this article, the fracture analysis on mode I crack of orthotropic functionally gradient materials is studied, under which the elastic constants changed exponentially along thickness of the plate.
文章对含i型裂纹的正交各向异性功能梯度材料板沿其板厚的弹性常数表达式呈指数函数变化时的应力-应变场进行分析。
In this article, the fracture analysis on mode I crack of orthotropic functionally gradient materials is studied, under which the elastic constants changed exponentially along thickness of the plate.
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