法向应力

算出了上述二阶弹性材料问题在z方向的位移和法向应力数值。

Numerical calculation for the second order elastic material for the displacement and the normal stress in the z-direction are carried out .

在较高的法向应力下，含起伏角较高齿形节理面的非贯通节理岩体可能出现破坏模式II（先张拉后剪切破坏模式）。

However , at higher angle of tooth-shaped asperities and under higher normal stress , the failure model II is found , which is in first tension but final shear failure .

提出了应用熔融指数仪测定聚乙烯（PE）熔体的流变参数和第一法向应力差的新方法，扩大了熔融指数仪的使用功能，并且提供了比较准确的数据处理方法。

The new method for measuring rheological parameters and the first normal stress difference of polyethylene fusion by the fusion index instrument was provided . This method expanded the applied function of the fusion index instrument , and given precise date processing .

计算结果显示，由于蠕变特性的存在，μDMFC膜电极工作面法向应力随着热-机械载荷循环次数的增加而增大。

Simulation results showed that because of the effect of creep , the overall normal stresses of the working plane in MEA increased with the increase of thermal-mechanical load cycles .

本文探讨了如何通过聚合物熔体流变特性参数的测量来估算挤出流动中第一法向应力差N1的问题。

This paper deas with the problem of evaluating the first normal stress difference ( N. ) in extrusion flow through measurements of the rheological parameters of polymer melts .

分别以膜电极工作面法向应力均值变化和分布均匀性作为设计输出指标，计算了25组环氧封装μDMFC结构有限元模型。

By evaluating the mean change and the uniformity of the normal stresses of the working plane in MEA , the paper calculated the 25 sets of finite element models of μ DMFC packaged by epoxy .

压应力场下VONMISES屈服应力分布同拉应力场，但第一主应力很小，法向应力变为负值；

In the case of compress stress , the distribution of von Mises stress is the same as under the case of tensile stress , but the first major stress become smaller , and the divisor stress is of minus .

结果表明：FRP材料与粒状材料界面的剪切性能，与法向应力的大小、相对粗糙度（表面粗糙度/颗粒的平均粒径）、砂体的初始密度、颗粒的棱角度有关；

Tests showed that the interface shear behavior between FRP composites and granular materials depended on the relative roughness ( surface roughness / particle mean size ), the normal stress level , the initial density of the soil mass , and the angularity of the particles .

基于实测的挤出胀大比数据，借助相关的公式估算了试样的第一法向应力差（N1），并与几个熟知公式的预测结果进行了比较。

On the basis of the measured die-swell ratio data , the first normal stress difference ( N1 ) was estimated by using the corresponding equations and the calculations were compared with the predictions of several well-known equations .

详细讨论了各种无量纲参数对于轴向速度分布、二次流动、温度分布、轴法向应力，摩擦系数和Nusselt数的影响，获得了若干重要结果。

The variations of secondary flow , axial velocity , distribution of temperature and axial normal stress , the ratio of fiction factor and the Nusselt number with different dimensionless parameters had been examined in detail .

在模拟聚合物注射成型中流动应力的建立及松驰过程中，本文应用Leonov模型模拟了简单剪切流场中剪切应力、剪切速率及法向应力的演变；

Appling Leonov model to the numerical simulation of injection modeling of polymers , this paper calculates the evolvement of the shear stress , shear strain velocity and the normal stress .

弹性力的加强会使得轴向速度分布、温度分布和二次流结构向外壁侧移动，轴法向应力变大，也会对摩擦系数和Nusselt产生影响。

When the elastic force increases , the distributions of axial velocity , temperature and axial normal stress as well as secondary flow structure will change . The elasticity also influences the ratio of fiction factor and the Nusselt number .

分析结果表明，由梁的剪力和横向应力（挤压）所引起的附加弯曲法向应力Δσ（xbmax）对于某些梁可以忽略，而对于另外一些梁却相当大而不可忽略。

From these analyzed results it had been shown that the stresses △σ xbmax are not always very small , they might be neglected for some beams , whereas for some others did not .

当平均法向应力σ≤6MPa时，冻结砂土抗剪强度近似服从库仑定律，此时粘聚力和内摩擦角随温度的降低而线性增大；

When the average normal stress σ _3 < 6 MPa , the shear stress strength can approximately be expressed by Mohr ′ s law , and the cohesion and internal friction angle linearly increase with decrease of temperature ;

泡沫流体的剪应力与法向应力差

Study on the shear stress and normal stress difference of foams

内胎胶挤出流动中第一法向应力差的预测

Prediction of first normal stress difference during extrusion flow of tube compound

用挤出物胀大等方法测量聚合物熔体的第一法向应力差

Determination of the First Normal Stress Difference of Polymer Melts

预应力作用下组合梁混凝土法向应力分析

Analysis of Normal Stress of Concrete in Prestressed Composite Beams

在高法向应力下，恰恰相反。

However , under the high normal stress , the result is opposite .

初始法向应力越大，相同剪切位移对应剪应力越大；

Higher initial normal stresses offer higher shear stress with the same horizontal displacement .

在法向应力影响下岩质材料的非线性粘塑性蠕变属性

Nonlinear viscoplastic creep property of rock material allowing for the effect of normal stress

塑变区中润滑剂法向应力差的影响的数值研究

The Numerical Research of the Influence of Lubricant Normal Stress Difference in Metal Forming Zone

粘弹性流体法向应力对抽油杆偏磨的影响机理

Partial abrasion mechanism of sucker rod caused by normal stress of visco - elastic fluid

研究结果表明，残余强度与有效法向应力间具有明显的非线性关系；

The results of investigations exhibit a nonlinear relation between residual strength and effective normal stress .

节理剪切强度随着一阶和二阶起伏度及法向应力的增大而增大；

The shear strength increases with the increasing first-order and second-order asperity heights and normal stress .

界面处残余法向应力较高，可能造成界面脱粘。

The normal residual stress at interface is great , which can result in the interface de-bounding .

法向应力和法向应变对复合材料层板自由振动基础频率的影响

Effects of normal stress and normal strain on the fundamental frequencies of free vibrations of composite laminated plates

悬浮流的剪切应力和第一法向应力差由壁面到槽道中心逐渐接近于0；

The shear stress and the first normal stress difference are close to 0 from wall to the centerline .

粘结力最好根据图9中剪切应力和法向应力的关系曲线确定。

Cohesion is best defined in terms of the plot of shear stress versus normal stress given in Figure 9 .

绘制了内管法向应力分布曲线，并对其影响因素进行了分析。

The curves of normal stress distribution on the inner cylinder were plotted , and the affecting factors were analyzed .