1) monotonic rotation of principal stress axis
主应力轴单调旋转
1.
Experimental study of stress-strain relationship of normally consolidated intact soft clay in Hangzhou under undrained fixed shear of principal stress direction and monotonic rotation of principal stress axis had been done,which was used to reflect the soil properties response to the monotonic rotation of principal stress axis under real engineering conditions.
为反映真实工程条件下主应力轴旋转应力路径引起土体性状的变化,对杭州地区正常固结原状软黏土在固结不排水的主应力轴定向剪切和主应力轴单调旋转条件下的应力-应变关系进行试验研究。
2) principal stress axes rotation
主应力轴旋转
1.
Discussion on laboratory test simulation of principal stress axes rotation induced by traffic loading;
交通荷载引起的主应力轴旋转室内试验模拟探讨
2.
The influences of principal stress axes rotation.
主应力轴旋转对岩土工程的影响日益受到人们的重视。
3) principal stress rotation
主应力轴旋转
1.
In many practical geotechnical problems,soils are always subjected to the stress path involving the principal stress rotation.
试验表明:土体强度主要受原生各向异性影响,试样在破坏时的主应力作用方向以及中主应力参数是影响土体强度的主要因素,而主应力轴旋转对于强度则无显著影响;试样无论是否经历主应力轴旋转,在破坏时都会有显著的剪切带产生,同时剪切带平面与大主应力作用方向的夹角基本保持一个常数;主应力轴旋转会引起土中孔压积累,积累程度受主应力轴转幅及旋转时剪应力幅值、剪应力水平支配。
2.
The experiments used to detect the characteristics of soil under the condition of principal stress rotation are analyzed systematically.
对目前国内外主应力轴旋转条件(包括单向旋转和循环旋转)下土体性状研究的室内试验进行系统的分析与总结,得到以下结论:土体在不排水主应力轴旋转条件下产生孔压积累,这在主应力轴循环旋转中特别显著,且通常大于等剪应力幅度的动三轴或扭剪试验产生的孔压,并可建立与某种应变增量的函数关系,此外孔压开展的速率与程度受到土体原生各向异性的影响,但当试样所受剪应力水平较低时,上述影响的程度减弱。
4) rotation of principal stress axes
主应力轴旋转
1.
Elastoplastic numerical simulation of plane strain problems of soils involving rotation of principal stress axes;
含主应力轴旋转的土体平面应变问题弹塑性数值模拟
2.
The rotation of principal stress axes is studied in two_dimensional and three_dimensional principal stress space,and the stress increment considering the rotation of principal stress axes of soil is analysed with the solution of the problems of plasticity considering the rotation of principal stress axes based on rigorous mathematical reasoning.
首先研究主应力轴旋转问题 ,研究了二维和三维主应力轴旋转的应力增量分析 ,这类研究使考虑主应力轴旋转的塑性力学问题建立在更加严格的数学基础上 。
5) cyclic rotation of principal stress directions
动主应力轴旋转
1.
The results of systematical test show that the dynamic strength of sand under cyclic rotation of principal stress directions is about fifteen percent lower than that in conventional cyclic torsional shear tests.
本文介绍用双向振动的动力扭剪仪模拟海洋波浪的加载形式，通过系统试验和对动主应力轴旋转和常规动扭剪试验结果的对比表明，考虑动主应力轴旋转，砂土的动强度将降低１５％左右。
6) principal stress axes rotation
应力主轴旋转
1.
And its effectiveness under the complex stress paths including cyclic rotation of principal stress axes is verified by comparison of simulation model and test results;and it is shown that the proposed constitutive model is capable of predicting reasonably the developments of strain components and the volumetric strain in various conditions including principal stress axes rotation.
已有试验研究表明,应力主轴循环旋转条件下砂土具有以下基本变形规律:(1)体应变随循环周数的增加而增加,但增加速率随其自身累积值的增加呈递减趋势;(2)剪应力–剪应变关系曲线存在明显的滞回圈,随循环周数的增加,滞回圈由未封闭型转化为封闭型;(3)应力主轴旋转条件下砂土的非共轴流动具有分段特征;(4)中主应力系数对应力主轴循环旋转条件下砂土的变形有重要影响,体应变的累积速率随中主应力系数的增加而增加。
补充资料：主应力
主应力
principal stress
zhuyingli主应力(prineipal stress)没有切应力作用的截面上的法向应力。经数学证明，金属塑性加工时于变形物体内某一点的应力状态可用下式所表示的二次曲面来确定: A“一‘X“十乞丁2+氏Z“+2场叉丫 +2殊yZ十2屯Z尤(1)式中A为任意常数，几、丐、么和rx.、，、几分别为作用在通过该点所引三个相互垂直坐标面上的正应力和切应力，X、Y、Z为此二次曲面上某点的坐标。当所取坐标轴的位置发生变化时，即用新的坐标来表示该曲面时，式中各项的系数将发生变化。这样，通过上述确定应力状态的点总可以引出这样三个相互垂直的平面(与坐标面平行)，在其上仅有正应力而无切应力。主应力符号的脚标分别用l、2、3表示，以分别代替正应力的脚标x、y、z。这样，所得到的三个主应力应为。1、。2、a:，分别作用在三个坐标面上。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条