查询词典 stress accent

This article mainly simulates gradually damage destruction process of rock, major in determinationg the definition of rock three-dimensional damage tensor, simplify to the damage tensor and obtain its engineering calculation method, and obtains the basic expression form of equivalent stress by equivalent stress assumption, symmetrization to the actual stress, thus obtains construction relation of the festival principle of three-dimensional damage rock mass, finally couples elasticity- plasticity with damage in the finite element equation, with reference to elasticity-plasticity gradually degenerated method thought, simulates rock damage to advance gradually the destruction process in finite element method, draws up elasticity - plasticity and damage coupling two-dimension finite element procedure with the C language in the VC contact surface, by simulating experiment destroyed process, acquires destruction image and the axial load distortion curve of model, agreement with the experimental result.

本文主要模拟岩石渐进损伤破坏过程，确定岩石三维损伤张量的定义，对损伤张量进行简化计算并得出其工程计算方法，采用等效应力假设得出有效应力的基本表达形式，对有效应力进行对称化，得出节理损伤岩体的三维本构关系，在有限元方程中实现弹塑性和损伤耦合；借鉴弹塑性渐进退化方法的思想，采用有限元的方法模拟岩石损伤渐进破坏过程，用C++语言在VC界面编制了弹塑性和损伤耦合的二维有限元程序，通过模拟已有的实验破坏过程，得出模型的破坏图像和轴向荷载变形曲线，与实验结果基本一致。

It is proved that the obtained radial and tangential stress curve link glossily at hardening zone radius r=R, and softening zone radius r=R and curve of tangential stress σ(subscript θ)/p0-r/α has not up-pinnacled stress concentration especially, the result goes all the way with the experiment result of Japanese scholar Jiuwubosheng.

证明了所求得的巷道围岩径向和切向应力曲线在硬化区半径r=R和软化区半径r=R处均光滑连接，特别是所求得的切向应力σ/p0-r/α曲线没有尖峰向上的应力集中，此结果与日本学者久武胜保的试验结果一致。

Shear stress and tangential stress of surrounding medium concentrate around bolt column and influencing range of stress is limited.

4周围介质的剪应力和环向应力集中于锚柱附近，影响范围很有限。

There is only tangential stress and radial stress on the wellbore wall. The decrease of the temperature is similar to increase of the mud density. It makes the tangential stress reduction. The increase of the temperature is similar to the decrease of the mud density.

文中对钻井过程中由泥浆周期性载荷作用下的井壁力学响应进行了研究，得出了不同载荷作用下，恒孔隙压力井壁和稳态孔隙压力分布井壁的应力和位移解析解。

The results show that the tangential stress distribution is decided by pressure gradient, that is, the maximum tensile stress locates where maximum pressure gradient is, while the compressive stress locates where pressure gradients change their direction.

结果显示，轴瓦周向应力分布取决于油膜压力的梯度，最大拉应力位于压力梯度最大处，而周向压应力的峰值则位于压力梯度方向改变处。

A finite element method is used to analyze the stress on tangential opening and orthogonal opening tubing connection on pressure vessels, the stress distribution information of vessel barrel, tubing and position of connection are obtained. And the stress test in the model.

本文对压力容器正交和切向开孔接管区进行有限元分析，获得了容器筒体、接管及其连接部位的应力分布结果，利用电阻应变测试技术进行现场测试。

When the tangential residual stress exists, the stretching stress can enhance and the crushing stress can remarkably reduce the compressive strength.

因此，为了提高石油套管的抗压溃强度，应根据管体的受力状态，使石油套管的管体上产生最佳的残余应力值，提高石油套管的抗压溃强度，延长使用寿命。

Affected by the backfilling, the tangential stress of shotcrete has a tendency is for pressure stress to be tensile stress; it is dangerous to induce the axial cranny.

对照现场实际，在近水平煤系地层中修建隧道，如有厚层硬岩层控制，只要对局部软岩层加强支护控制，是可以保证围岩的整体稳定的。

Based on the Inglis formula, which calculates the tangential stress of the surrounding rock of geological stress field in different circumstances, programme is developed to compute the corresponding tangential stress of the surrounding rock of several underground plants, for instance, Ertan project of Sichuan according to different directions of longitudinal axle.

从地下洞室周边切向应力的英格里公式出发，提出针对不同环境的地应力场进行地下厂房纵轴线方位优选的简便方法，并编程计算了四川二滩等多个地下厂房不同纵轴线方向所对应的洞室周边切向应力，分析不同纵轴线方向条件下洞室周边切向应力的极值，并与实际工程所选取的纵轴线方向所对应的切向应力值比较，讨论了工程所选纵轴线的合理性以及洞室周边应力的集中程度。

When the annealing temperayure was 400℃, the stress of film was from tensile stress to compressive stress.

研究发现，在空气中退火温度到400℃时，薄膜的应力由拉应力转变为压应力，600℃时，ZnO薄膜的半峰款最窄。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。