查询词典 proof stress

The elastic stress diagram design method is behind the times and cant meet the command in practice.In the paper the author collected and analyzed a large amount of data about the SLRCP on several typical domestic model experiments and the projects in practice. By summarizing and analyzing the data, the author set up a typical computing model and analyzed the model by the software ANSYS, by reading the output data of the stress and the crack from the program, combined with the experimental results, the author summarized the destroy procession of the stock. The paper also discussed the influence of other main factors to the crack and the stress besides the internal water pressure, such as the concrete material, the dimension of stock and the way of laid-out steel bars.

本文通过对大量实际工程中的坝后背管资料的收集、归纳和分析，选取了具有代表性的计算模型；用有限元软件ANSYS计算了典型坝后背管结构在实际内水压力作用下的应力分布和裂缝发展情况；以国内几个有代表性的模型试验和有限元计算的成果为依据，分析了在内水压力作用下钢衬钢筋混凝土压力管道管壁裂缝的特点，并尝试总结出此种管道的裂缝出现的原因及其发展规律，同时确定了坝后背管结构极限状态的新的定义方式——以坝后背管的裂缝宽度来定义。

The constant term and non-singular terms, which are called general T-stress here, play a significant role in determining the stress and strain fields around a crack tip which in turn can affect the calculation of stress intensity factor of the crack.

裂纹尖端的奇异应力场可以表达为Williams级数展开的形式，其中常数项和非奇异项对裂纹尖端的应力应变场有着很大的影响，这些影响反过来作用于裂纹应力强度因子的计算。

As the overall thermal load and structural geometry is not continuous or discontinuous material generated by stress , this stress is called secondary stress ...

由于温度载荷以及结构的总体几何不连续或材料不连续所产生的应力，这种应力称为二次应力。。。。

With the large-scale finite element software ANSYS,we can achieve single-well and double-wells mechanical model, do a lot of simulations with different interwell space and get the stress value and stress image, and then use EXCEL to generate the correlation curve ,at the same time compare the stress image with different interwell space .

本文主要采用大型有限元软件ANSYS实现单口井和双口井力学模型的建立，进行大量的模拟计算得到不同井间距下的应力值和应力云图，然后借助EXCEL生成对比曲线，同时比较不同井间距时的应力云图。

According to Lemaitre's damage evolution law and the assumption of this paper that the cyclic loading maximum tensile stress has the most contribution to the cyclic damage and assume that the stress is the maximum stress .The material parameters S which are expressed in exponential form and generalize the variation in the process of cyclic loading is exponential experience equation which provide the expectation of cyclic damage of 63Sn/37Pb material and lead it into the calculation of damaged incremental form and assume that damage keeps constant during the same cycle. The results match the experimental data. It proves that the Endochronic plasticity theorem adopt the calculation of damage environment.

根据Lemaitre损伤演化律及本文假设循环负载下拉应力在最大值附近对循环损伤的贡献最大，文中应力对各循环之损伤而言假设应力为最大拉应力，将材料参数S以指数型式表示，归纳出疲劳损伤在循环负载过程中的变化为指数型经验式，提供63Sn/37Pb材料在循环负载作用时损伤情况的预测，并引入含损伤增量式内涵时间之计算中，假设同一循环的损伤为定值，其计算结果与实验数据吻合，说明内涵时间塑性理论亦适用於损伤环境下的计算。

As far as free proline content was concerned, that of EI plants was less than EF plants due to higher water-holding ability of EI plants (such as in field plot and field pot sustained drought stress), or due to less damage of membrane of EI plants (such as field pot cyclic drought stress and greenhouse osmotic stress).

至于脯氨酸含量的变化，或是由于感染植株保持体内水分的能力更强（固定样地和田间盆栽持续性干旱胁迫下），或是由于感染植株叶细胞膜结构受到的伤害程度更小（田间盆栽周期性干旱胁迫和温室渗透胁迫下），感染植株的游离脯氨酸含量均低于非感染植株。

It is major work to present the tectonic time duration system of the strain rate method, which is an original exploration.(1) Principle: Its basis is the stress and strain rule depending on strain capacity in steady-state stress field, but not the radioactive decay law depending on radiation dose in invariable radiation field. This can be simplified as a process of differential stress-strain rate-strain capacity-time duration calculating.

工作重点是梳理出应变速率法构造时限定年系统，属原创性探索：①原理：不是基于放射性核素衰变规律，而是基于应力应变规律；不取决于恒定辐射场的辐射剂量，而取决于稳态应变场的应变量，可简括为差异应力-应变速率-应变值量-计算时限的求索过程。

The results show that, the dynamic strength of sand is strongly depended on initial orientation of the major principal stress and consolidated deviator stress ratio, but less associated with initial coefficient of intermediate principal stress.

研究表明：初始主应力方向角与固结偏应力比对饱和砂土的动强度影响显著，而初始中主应力系数的影响不大。

The analysis of the results show as follow:(1)The consolidated-undrained creep, which doesn't include the volume strain, can be expressed by logarithmic functions as a type of under a different deviator stress.(2)The shear creep behaves in a linear elastic character in a lower stress level, and it is a nonlinear behavior in a higher stress level.

分析表明：(1)固结不排水蠕变中没有体积变化，不同偏应力下剪切蠕变可用对数形式表达；(2)固结不排水剪切蠕变在低应力水平下表现为线性粘弹性，而高应力水平时则具非线性的特性。

Under the information theory, more applications are provided to those back analysis methods. Based on the Duncan-Chang E-B model, which can simulate earth-rock dam's non-linear mechanics behavior well, the paper introduced the nature coordinate system to the stress space. In this way, hydrostatic stress and stress deviator were decomposed each other.

论文以能较好模拟土石坝非线性力学行为的Duncan-Chang E-B模型为基础，通过引入应力空间下的自然坐标系，分解应力球量与应力偏量，从而导出一个在有限元计算中，位移对参数偏导数的闭合形式公式。

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。