plastic zone

The effect of cyclic loading makes the plastic zone hardening ( or softening), which raises the stress level in Dislocation-Free Zone ( DFZ) and the value of-integral, and may lead to fracture.

循环载荷使得裂纹尖端的塑性区循环硬化/软化，这使无位错区的应力和裂纹尖端区域的J积分的值升高，从而有可能导致开裂。

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There is dislocation-free zone around the crack tip which has similar shape as the plastic zone.

各种裂纹尖端周围均存在无位错区,其形状与相应的塑性区相似.

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Theoretical analysis shows that the radius of construction disturbance zone in the soft clay ground is about 1.2 times of that of the plastic zone and 9 times of that of the guide tube of vertical drainage bodies.

计算表明扰动区半径可取塑性区半径的1.2倍，扰动区半径约为竖向排水体导管半径的9倍。

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The effects of the slip plane orientation and load on dislocation emission or plastic zone have been investigated.

考察了滑移面取向、外荷对发射位错及塑性区的影响。

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It can be found that tension-compression strength ratio has obvious effect on the plastic zone of mode I crack tips.

得出了材料拉压比对I型裂纹裂尖塑性区影响很大。

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Using strange element, Shih obtained plastic zone shape at the crack tip for mixed mode crack.

Shih〔1〕应用奇异单元，获得了不考虑应力松驰小范围屈服条件下复合型裂纹尖端塑性区形状。

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The strength reduction FEM, taking the run-through of plastic zone as unstability criterion, can obtain actual stress distribution and simulate the process of slope failure.

以塑性区贯通为失稳判据的强度折减有限元法，可以很好的求解真实的应力分布和模拟软土边坡破坏过程，是一种值得提倡的方法。

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Artificial excavation decreases the slope stability and the plastic zone increased.

人工开挖边坡的稳定性有所下降.

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In this paper, with Mises yield criterion, the plastic zone distribution in front of crack tip with mixed mode(ⅰ ⅱ) loading is analyzed theoretically.

利用Mises屈服准则从理论上分析了Ⅰ－Ⅱ复合型裂纹尖端前缘的塑性区分布。

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Research on the plastic zone near mixed mode ⅰ-ⅱ crack tip with photoplasticity

用光塑性方法研究Ⅰ-Ⅱ复合型裂纹尖塑性区

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According to the discuss of brittleness and brittleness index for concrete, as a true brittle material from microstructure point, magnitude of brittleness of concrete is relate to the dimension of plastic zone.

对混凝土脆性及脆性指标分析的结果表明，混凝土作为微观真脆性的材料，其脆性大小最终应归结为塑性区尺寸的大小；

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temperature rise, stress, fluctuation of stress and evolution of plastic zone during laser heating of metal plate

金属板激光加热时的温升、应力、应力波动和塑性区演化

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An investigation of the plastic zone under a pulse tensile loading by the elastic-plastic FEM

脉动拉伸载荷作用下的塑性区研究&弹塑性有限元解

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The results show that the second principal stress and geological conditions have a certain impact on the plastic zone. 4.

研究结果显示，第二主应力和地质条件等对塑性区有一定的影响。

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The Sliding Displacement and Plastic Zone of Mode ⅱ Dynamic Crack Tip

Ⅱ型动态裂纹尖端的滑开位移及塑性区

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the extent of plastic zone is related to the mining depth recovery ratio and width of mined strip.

塑性区大小与开采深度、条带开采宽度及回采率有关。

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Effect of Triaxial Stress on the Plastic Zone Distribution in Front of Crack Tip with Mixed Mode Loading

三轴应力状态下复合型裂纹尖端前缘的塑性区分布

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It is found that the fluctuation is induced by the gradual aggravation of thermal expansion and thermal softening, and is closely related to the evolution of plastic zone in the metal material.

根据激光静态加热过程中应力出现的波动现象，发现是热膨胀、热软化逐渐加剧导致的，且与金属板内部塑性区域的发展演化密切相关。

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The thermoplasticity in a high temperature plastic zone was good because of the deformation twin formed in austenite grains.

在高温塑性区塑性良好是由于奥氏体晶粒发生大量的孪生变形；

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Finally the crack tip plastic zone CTPZ was introduced to interpret the variations of KIC.

从疲劳裂纹尖端塑性区的角度阐述了影响材料断裂韧性的因素.

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In this paper, the secondary stress, radius and displacement in plastic zone of cylinder tunnel under 3-D stress are analyzed on basis of do u ble shear strength theory.

为此本文利用双剪强度理论分析了三维应力状态下圆筒形巷道塑性区次生应力、半径和位移。

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The material in the large plastic zone has been hardened.

在大塑性区内材料已经硬化.

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However, in the rain condition, the slope displacement is large, plastic zone extends to the foot of the slope, the stability coefficient is decrease.

而在暴雨状态下，边坡发生较大位移，塑性区延伸至坡脚处，稳定性下降。

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In order to predict the mixed mode crack growth in sliding mode fracture, the fracture criterion of mixed mode crack growth is introduced here based on the maximum size of plastic zone near crack tip.

为了预测复合型裂纹呈滑移型（Ⅱ型）的断裂，在此提出了复合型裂纹扩展的最大塑性区尺寸断裂判据。

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Stress Analysis of Plastic Zone of Wheel Groove for Continuous Extrusion by Successive Element method

连续挤压轮槽塑变区应力分析中的逐次单元法

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the development of the plastic zone in the mass is different as the wall movement varies.

研究结果表明,不同的墙体变位模式下土体塑性区发展模式差异较大.

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there is no acknowledged formulae in precisely calculating the plastic zone size when three dimensional effect has to be considered.

现阶段对于三维约束状态下的裂纹还没有一个公认的可以准确计算塑性区大小的公式。

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The result also reveals that the reinforcement material penetrating into the plastic zone of the slope will effectively elevate the slip resistance effect.

同时，计算分析了加筋材料摆放位置不同时，对土坡抗滑能力的影响效果。提出当将加筋材料贯穿于土中塑性区时，加筋效果最明显。

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analysis of surrounding rock mass plastic zone of round tunnel under non-uniform stress field based on the unified strength theory

基于统一强度理论的非均匀应力场圆形巷道围岩塑性区分析

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The main speed of laser welding is very fast and the plastic zone is considerably narrow.

这主要与激光焊接线能量小,塑性变形区窄有关.

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