煤岩体在外载荷作用下发生失稳破坏时的一个重要性质就是其变形具有应变软化的特征。
An important characteristic of instability failure of coal and rock which is subjected to external loadings is that its deformation possesses property of strain softening.
在应变软化材料的主裂缝尖端存在一断裂过渡区。
There is a fracture process zone near the crack tip for the tensile strain softening materials.
此外，介绍了关于应变软化材料有限元数值模拟的一些研究进展，并且介绍了适合应变软化材料有限元数值模拟的位移控制法。
Furthermore the research on the FEM modeling of strain softening material is reviewed followed by the introduction of a FEM modeling based on the displacement-controlled method.
根据他人已有的关于材料应变软化模型的球(柱)形孔扩张问题的解，建立了压密灌浆中的浆泡扩张模型。
According to the former solution of spherical or columnar hole about material strain-softening model, the model for grout bulb expansion is formed in compaction grouting.
考虑到土体的流变效应，通过推广不平衡推力法，提出了具有应变软化性质的土质边坡渐进破坏的一个力学模型。
In view of the effects of rheological characteristics of soil, a mechanical model of progressive failure of strain-softening soil slopes is presented by generalizing the method of unbalanced-thrust.
对应变软化-硬化效应提出一种新的起因于粘弹变形内禀滞后效应的理论解释，并定名为粘弹软化-强化效应。
A new theoretical interpretation for the strain softening and hardening effects, which were caused by the interior hysteresis nature of viscoelastic deformation.
提出考虑土的应变软化、剪胀（剪缩）性和应力路径影响的非线性弹性模型。
Suggest the nonlinear elastic Constilutive model taking into the account of strain-softening, shear dilatancy(shrinkage)properties and stress path.
分析结果表明，由于岩土类材料的应变软化性质，结构呈现渐进破坏，且承载特性与材料的软化程度有关。
Analysis shows that strain softening of the material causes progressive failure and affects the load carrying capacity of the structures.
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.
为了更加真实地反映岩土体材料的特性，以某深基坑土钉加固工程为背景，建立相应的应变软化模型。
In order to reflect the characteristics of geotechnical material more exactly, the strain-softening model was built based on the engineering background of one deep foundation reinforced by soil nail.
第4章对平面应变状态下应变软化岩石试件的孔隙压力效应进行数值模拟。
In chapter 4, the influences of pore pressure on shear bands and on complete stress and strain curves have been modeled.
计算表明，非线性理论的结果与线性理论的结果相差不大，而拉应变软化模型的结果与前两者有较大差异。
One important conclusion is that nonlinear creep theory gives almost the same results as those of linear one, but gives rather different results from those of strain-softening model.
在应变软化阶段，试样的变形由对称性向非对称性转变。
Symmetrical deformation mode of the specimen was converted into asymmetrical pattern beyond peak stress.
摘要随着煤矿开采的逐渐加深，深部高应力巷道围岩表现出典型的应变软化、破裂膨胀及流变特征。
Abstract: With the coal mine excavated deeper gradually, strain softening, swelling fracture and rheology of the rock appear around deep and high stress underground roadways.
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.
不同岩性岩石的应变软化性态和破坏机制也均随侧压的增大而发生转化。
Behavior of the strain softening and failure mechanism on different rocks transforms with the increase of confining pressure.
岩石峰后的应变软化特性和剪切膨胀特性对塑性临界状态有重要影响。
The rock strain softening after rock peak and the shear expansion properties affect the plastic critical state.
建立了拉压模量不同及应变软化特性材料的柱形孔扩张理论。
An expansion theory of cylindrical cavities in strain-softening materials with different moduli in tension and compression is presented.
岩土介质的应变软化问题是岩土力学研究的难点和热点。
The research of strain-softening is a hot topic in engineering.
首先，由于在应变软化阶段的峰值强度的剪切应变局部化启动的纵向和横向的塑性变形引起的耗散能进行了分析。
Firstly, dissipated energies induced by axial and lateral plastic deformations due to shear strain localization initiated at peak strength in strain softening stage is analyzed.
幂律模型既能反映硬化特性又能模拟双曲线模型不能反映的应变软化关系，因而能合理地反映粗粒料的应力应变关系。
Power law model can describe both strain-hardening and strain-softening behaviors, which can be used effectively to model stress-strain relationship of coarse-grained materials.
幂律模型既能反映硬化特性又能模拟双曲线模型不能反映的应变软化关系，因而能合理地反映粗粒料的应力应变关系。
Power law model can describe both strain-hardening and strain-softening behaviors, which can be used effectively to model stress-strain relationship of coarse-grained materials.
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