Two kinds of size effects on micro deep drawing are investigated, which can be explained by surface layer model and strain gradient model.
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。
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。
Then, we introduce a strain gradient theory and its main applications, in which no high-order stresses are included.
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；
One dimensional shear strain rate gradient formation of the second order is proposed based on the non-local continuum model.
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。
The design of strain gages in regions of high strain gradient is discussed.
本文讨论了大梯度应变区电阻应变片的设计问题。
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.
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。
Main fracture occurs in the high gradient area where the strain and gradient are relatively lower.
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。
Therefore, it is necessary to establish a micron level continuum theory (strain gradient plasticity theory) considering the intrinsic material length.
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）。
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 distributions of equivalent plastic strain, dissipated, kinetic and elastic strain energies are all dependent on the gradient distribution of the composition.
等效塑性应变的幅值、动能、弹性应变能及耗散能随时间的变化规律与功能梯度材料组份成分沿厚度的变化密切相关。
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.
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。
This paper systematically introduces some methods of micro-forming and a universal theory about strain gradient plasticity at present.
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。
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.
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 influence of high-order gradient of strain on static analysis of nanofibers is discussed.
讨论高阶应变梯度对纳米纤维轴向应变分布的影响。
Plastic limit load of viscoplastic thick-walled cylinder and spherical shell subjected to internal pressure is investigated analytically using a strain gradient plasticity 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。
There clearly exists a strain intensity gradient and compression rate gradient within the country rocks so that both strain intensity and compression rate increase toward the contact surface.
热接触变质围岩内应变强度和压缩率向岩基接触面方向递增，存在较明显的应变强度梯度和压缩率梯度。
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.
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。
In the first time, a theoretical study on ductile shearing bands based upon strain gradient plasticity theory is conducted in this paper.
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。
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.
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。
Distributed shear strain and displacement in localized shear band were investigated considering degraded stiffness in the strain-softening process based on gradient-dependent plasticity.
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。
This paper deals with X-ray diffraction profile analysis for the sample with a micro-strain gradient in its surface layer.
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。
Therefore, it is necessary to establish new constitutive models—strain gradient plasticity theories which possess the intrinsic material length.
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。
The tissue culture of mumps virus S79 strain was purified by ultrafiltration on hollow fiber, PEG precipitation and density gradient ultracentrifugation.
将腮腺炎病毒S79株培养液用中空纤维超滤器进行浓缩，经PEG沉淀后，采用蔗糖密度梯度离心法纯化抗原；
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.
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。
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，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。
Residual stress distribution of FSW has high gradient, which makes the conventional strain gauge hole drilling method unsuitable.
应变片钻孔法是工程中应用最广的残余应力测量方法之一。
Residual stress distribution of FSW has high gradient, which makes the conventional strain gauge hole drilling method unsuitable.
应变片钻孔法是工程中应用最广的残余应力测量方法之一。
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