应变

The results indicate that the temperaturedependence of critical resolved shear stress depends mainly on antiphase boundary energyand CRSS of γ' phase, while the orientation dependence and strain rate sensitivity are determined byγ' phase.

摘要本文考察了镍基高温合金单晶压缩屈服行为的温度、取向和应变速率依赖性、结果表明，γ＋γ合金临界分解切应力的温度依赖性主要由γ'相的APB能和γ'相的CRSS的温度依赖性共同决定，而取向依赖性和应变速率敏感性则由γ相决定。

With the adoption of the rate-sensitive constitutive relationship, it is asymptotically investigated the propagating tip fields of plane strain mode Ⅰ,Ⅱ and antiplane mode Ⅲ crack under the condition of incompressibility, and the dynamics equations are obtained separately governing the stress and strain fields at the crack-tip.

采用这种率敏感型本构关系，本文对不可压缩条件下平面应变Ⅰ型、Ⅱ型和反平面Ⅲ型扩展裂纹的尖端场进行了渐近分析，分别求得了其裂纹尖端应力和应变场的动力学控制方程。

Both the forward and inverse problems associated with the beam equation are considered. The order of accuracy of this IFE space is numerically investigat....

在模态法方面，为了解压曲梁之力学行为，则利用应力场、应变场与位移场的关系推导出应变能项和动能项，再以汉米尔顿原理求。。。。

In general, the deformation of the model grille is a combination of axial and shear strains

一般情况下，模型栅格的变形是轴向应变和切向应变的组合。

In this paper, the dynamic compressing experiments for the matrix material of the tungsten alloys which have been three different deforming(0%、 32.6%、 44.6%) processed have been performed by the experimental technology of separated Hopkinson pressure bar and many accurate datum have been obtained. Also the three materials have been compared with each other and analyzed. The results show that the optimized values are in a certain range to optimize the materials by changing their deforming technology. The parameters of constitutive model of Johnson-Cook have been fitted based on the datum. Then proceed to the next step, adiabatic shear band of these three matrix materials has been analyzed with finite element method. The result shows that the relations between stress and strain are different because of the differences of technical process of the three materials, but they are in great commonness in the material experiment and in great coherence in the distribution of time and space, which can been seen from the space distributing figures of plastic strain.

利用分离式Hopkinson压杆实验技术对三种不同变形量(0%、32.6%、44.6%)钨合金基体材料进行动态压缩实验，取得大量精确的数据，对比分析三种材料，结果表明通过改变变形量对材料进行优化，其变形量的优化值是有一定范围的；本论文拟合、确定了钨合金基体材料Johnson-Cook本构模型参数并对三种基体材料绝热剪切带进行有限元分析，结果表明三种材料由于工艺流程的不同，应力应变关系也不尽相同，但从塑性应变的空间分布图上体现了材料很大的共性和时间以及空间分布的一致性。

The relationship of optical gain with well width, lnAs composition and the carrier concentration is obtained by considering the energy band of the strain material, transition matrix, band gap shrinkage due to carrier concentration, and carrier intraband relaxation.

考虑了应变体材料的能带结构、光跃迁矩阵元、载流子浓度引起的禁带变窄以及载流子带内驰豫效应后，模拟得到了GaAs／InGaAs／GaAs应变量子阱光增益与阱宽，InAs给份及注入载流子浓度的关系。

Based on the above results, plane strain deformation is considered to be a necessary condition of shear banding.

基于对以上研究结果的讨论，本文认为，剪切带是在平面应变变形条件下当应变硬化率降到很低时发生的。

Results: In three point bending, maximal plate strain in the fracture model was lowest in group A(774.50±18.00με) and highest in group D(849.67±44.03με).

结果：在三点折弯实验中，D 组中骨折端的平均应变(849.67±44.03με)最大，A 组中骨折端的平均应变(774.50±18.00με)最小。

Taking account of the characteristics of pure shear and plane strain, after the measurement to fish-head bodin s'present shapes and the resume of their original shapes, with several reasonable and ideal presumes, the author put forward the refraction rheology gauge of fish-head boudin.

认识到鱼嘴构造的纯剪切作用机制及其平面应变的特点，通过对香肠现有的几何参数的测量和计算以及对香肠构造演化初始阶段几何参数的恢复，在合理假设的理想状况下，推导出鱼嘴构造的应变差折射流变计。

Bourdon is an attempt to take into account the strain that the piping undergoes when subjected to pressure.

此应变是由于两部分引起－压力端部的轴向应变和受压下由于径向和环向膨胀的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。