查询词典 principal stress

The results suggest that the optimal reinforcements align with the principal stress of the maximum absolute value.

结果表明在一般应力状态下，支护材料分布与绝对值最大的主应力方向一致。

Took Chongqing Gong-he tunnel as an engineering example and studied the failure mechanism of surrounding rock and the correlation with bolt support system by using the methods of theoretical analysis, modeling test, numerical simulation and in situ test, some helpful conclusions were arrived as follows.Firstly, a new failure criterion for transversely isotropic rock mass was proposed with consideration of bedding plane orientation and major principal stress, and the corresponding algorithm, arrived through VC++6.0, can be easily embedded into the software FLAC3D for the geotechnical calculation.

论文在国家自然科学基金专项基金创新群体基金项目(No.50621403)以及国家自然科学基金重点项目"隧道与地下空间工程结构物的稳定性与可靠性(No.50334060)"的资助下，以共和隧道为示范工程，运用理论分析、物理模型实验、数值模拟和现场测试等手段，对共和隧道大埋深段层状岩体的围岩变形破坏机理、锚杆支护力学效应及围岩-支护结构的变形特征等内容进行了研究，其主要研究成果有：①在总结和探讨国内外学者提出的层状岩体经验型连续介质破坏准则基础上，结合层状岩体力学特性，考虑层面方向和最大主应力方向两个影响因素，提出了共和隧道层状岩体横观各向同性破坏准则；采用汇编语言VC++6.0实现了横观各向同性弹塑性本构关系的算法，并嵌入FLAC3D有限差分数值分析软件接口中实现数值运算。

Compared with test results, the rationality of the proposed bilinear principal stress function is testified.

通过与试验数据的比较，表明所提双线性主应力函数的合理性。

The principal stress traces of an object are often drawn by hand, or at most drawn with a French curve, which induces the results very inaccurate.

在土木建筑工程中主应力迹线是布筋方向的依据，但是在工程中通常都是徒手或用曲线板近似绘制主应力迹线。

Frictionally slipping contact ; equivalent stress ; principal stress ; contact pressure ; shear traction

摩擦滑动接触；等效应力；主应力；接触压力；剪切牵引力

The foundation soil is divided for finding the ultimate bearing capacity of a foundation with given buried depth and size. Supposing a uniform load acts on the foundation, Mindlin's integral formula and comer points method are used to get extra stress of every mesh knot by MATLAB program, then the principal stress is found. Combining with failure criterion, MATLAB program is used to find coordinates of points which are destroyed. Using graphic processing function of MATLAB, the failure points are showed in the coordinate.

为确定作用在已知埋深、给定基础形状地基土上的极限承载力，对基底下的土体进行网格划分，先假定一均布荷载作用在此地基土上，运用明德林解的积分公式，结合角点法，编制MATLAB语言程序，求出每个网格节点上附加应力，进而求得每个网格节点上主应力，根据破坏准则，结合程序找出破坏点的坐标，利用MATLAB的图形处理功能，把破坏点的坐标在坐标图中显示出来。

Taking one wheel moving load as an examples the stress state variation, principal stress axes rotation and the influence of load speed are analyzed.

以单个轮轴移动荷载为例；分析地基土单元的应力状态变化、主应力轴旋转以及荷载速度的影响。

It is shownthat the revised models can simulate that medium principal stress affects on strength anddeformation of sand at degree and predict approximately volumetric strain caused by mediumprincipal stress.

结果表明改进后的三种模型可以一定程度的模拟中主应力对砂土强度和变形特性的影响，能够近似预测由于中主应力影响产生的体积应变。

Because the area on the east part of the Anren county seat is near the regional primary subduction - fault, namely the NNE - trending Chaling - Chenzhou fault, the Wufengxian - Tiesitang NW- trending fault had little strike -slip measure, so the derivative stress and traction were smaller, and at the same time the regional NWW- trending principal stress was stronger, which produced NNW -trending folds.

安仁以东由于紧邻NNE向茶陵一郴州主俯冲汇聚断裂，NW向断裂走滑量相对较小，派生应力与牵引效应小，而区域NWW向挤压应力大，从而于断裂两侧均形成与区域构造线一致的NNE向褶皱。

The project rockburst occurs much in the depth portion understructure work, belongs to three bearing conditions, three principal stress disparities are not big, the energy liberation becomes more and more difficult, therefore under the high crustal stress condition the rock mass can deposit the massive energies of deformation.

工程岩爆多发生在深部地下工程中，属于三项受压状态，三个主应力差距不大，能量释放变得越来越困难，高地应力条件下岩体能够储蓄大量的变形能。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。