应力梯度

MEMS薄膜平均应力梯度及弹性模量在线提取方法

A Method for In-Situ Measuring Average Stress Gradient and Elastic Modulus of a MEMS Film

研究了在modified-ψ衍射几何条件下，铍材表层中存在不同应力梯度时的d～sin2ψ曲线的形状，确定了铍材表层内的应力梯度对常规的X射线应力测试的影响。

The shape of d vs sin 2 ψ curve with stress gradient near the beryllium surface is studied under the modified ψ diffraction geometry condition , and the effect of stress gradient near the beryllium surface on the conventional x ray stress measurement is determined .

铍材表层应力梯度对X射线应力测试的影响

Effect of Stress Gradients near the Surface Beryllium on the X-ray Stress Measurement

MEMS薄膜等效应力梯度在线提取方法的研究

Study on the In-Situ Measurement Method for Equivalent Stress Gradient of a MEMS Film

结果表明，在（sinψ）2≤0.5范围内，应力梯度对测量结果有明显影响，应力测试值因应力梯度存在而偏离真实值。

The results show that over the range of ( sin ψ) 2 ≤ 0.5 , there are significant effects of stress gradient on the measuring result .

最大主应力梯度值为0.029MPa/m，垂直应力梯度值为0.026MPa/m，最小主应力梯度值为0.023MPa/m；

The gradient of the maximal principal stress is 0.029Mpa/m . The gradient of the vertical stress is 0.026Mpa / m , and the gradient of the minimum principal stress is 0.023Mpa/m .

热裂的相对应力梯度和频率因子无量纲判据

Hot tear Dimensionless Criterion for Relative Stress Gradient and Frequency Factor

光弹性试验中等差线图的应力梯度曲线

The Stress Gradient Curve of Equidifferent Line Diagram in Photoelasticity Experiment

焊接残余应力梯度测试的试验研究

Experimental research on measurement of residual stress gradient in welding

具有切应力梯度的平行平板流动腔的构造

Construction of Parallel-plate Flow Chambers with Shear Stress Gradients

应力梯度不均匀时平板表面裂纹的应力强度因子

Stress Intensity Factors for a Surface-crac ed Plate Subjected to Non-uniform Stress Gradients

应力梯度对混凝土强度的影响。

Influence of stress gradient on strength of concrete .

不同热处理的铝合金在应力梯度影响下表面裂纹扩展特性的评价

Evaluation of small crack growth rate of aluminum alloys under different stress gradients

钨合金丝材无模拉拔成形温度场及流动应力梯度

Temperature Field and Yield Stress Grads during Wire Die-Less Drawing of Tungsten Alloy

应力梯度对混凝土极限拉伸值的影响

Effect of Stress Gradient on Extensibility of Concrete

煤层温度和应力梯度变化对煤层瓦斯压力计算的影响

The Influence of In-situ Stress Gradient and Geothermal Temperature on The Calculation of Coalbed Gas Pressure

根据水平最小主应力梯度分布状况，选择注水压力。

Water injection pressure should be chosen according to the distribution of the weakest horizontal main stress gradient .

在热点处单元的应力梯度越大，两结果差别越明显。

The two results are the more obvious different , the greater the stress gradient around the hot spot .

分别设计了涡轮盘销钉孔附近危险区域&维疲劳伴随试棒和考虑应力梯度影响的模拟试件，并确定了低周疲劳试验方案及参数；

The fatigue incidental bar specimen and imitation specimen of the critical site aside turbine disk pin-hole were designed .

下颌骨下颌角、升支后缘的应力梯度变化较大。

Big gradient changes and high tension of stress were found at mandibular angle and along the posterior border of the ramus .

薄膜沿厚度方向的平均应力梯度及薄膜的弹性模量对器件性能有重要影响。

The stress gradient along the thickness and the elastic modulus of a MEMS film have important effects on the performance of related devices .

通过数值分析提出，构件表面应力梯度和贴片厚度是影响厚度效应的主要因素。

Through the numerical analysis , it is posed that the structure surface stress gradient and the coating thickness are the principal factor that influence thickness effect .

提出了偏心受压的钢管混凝土考虑钢管径向应力梯度对紧箍作用影响的核心混凝土的应力-应变关系模型。

A stress-strain relation of core concrete is presented , in which the confinement effect of steel tube to core concrete is modified by the circumference stress grade .

计算结果表明，接触区边缘存在较高的应力梯度，接触应力的有限元解同网格疏密度密切相关。通过建立一系列不同密度网格模型开展了有限元建模研究。

It indicated that there was high stress gradient near the edges of contact zone , and the numerical solution of contact stress depended on the grid density .

其中裂纹源是微动磨损形成的磨痕位置，磨痕位置处的应力梯度及磨痕导致的应力集中促进了该区域的裂纹萌生。

The crack source zone was the wear scar caused by fretting wear , and the stress gradient and stress concentration in the fretting wear promoted the crack initiation .

这主要是因为，用实验的方法只能得到大应力梯度场在应变片范围内的平均应力，而不能得到真正的高峰点应力。

The reason for this is , the average value of steep stress field is obtained by strain-gauging method , and the peak stress can not be measured by this method .

油气二次运移可分为两个阶段，即沉积物的自重应力梯度驱动阶段和构造应力与自重应力的叠加应力梯度驱动阶段。

Oil and gas secondary migration can be divided into two stages according to type of drive : drive by self-weight stress gradient and stacked stress gradient of tectonic and seif-weight stresses .

围岩的切向应力梯度随着材料脆性指数的增加而增大，厚壁圆筒临近整体破坏时，最大切向应力位于距筒壁内表面一定深度处。

Gradient of tangential stress increases along with the increase of brittle index of rocks , and the maximal tangential stress occures at some distance from the inner surface of the cylinder .

当断裂延伸至褶皱核部发生分叉与合并时，应力梯度下降，应力对断裂的控制能力减弱。

When fractures stretch to core of folds , stress gradient descend and ability of stress make control of fractures is impaired so that it 's easier for raising of forfication and combination .

对带双腹板顶底角钢连接钢框架进行了非线性有限元分析，得到了钢框架的弯矩图以及应力梯度图等分析结果。

Nonlinear finite element analysis of steel frame with two web and top-seat angle connections is performed in this paper , moment figure and stress gradient figures of this steel frame are gained .