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stress
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  应力
    Research of Hybrid Stress FEM and Its Integration with MSC/PATRAN
    杂交应力元的研究及其与MSC/PATRAN的集成
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    Experimental and Theoretic Studies on the Impact Buckling of Columns and the Effect of Stress Wave
    直杆的撞击屈曲及其应力波效应的实验和理论研究
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    Strain Gradient Plasticity Theory Based on Taylor Dislocation Model with Non-classical Vector-like Stress
    考虑Taylor位错模型的含非经典应力矢量的应变梯度塑性理论
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    Numerical Methods for Limit Analysis and Reference Stress Determination of Structures under Multi-Loading Systems and Their Engineering Applications
    多组载荷下结构极限分析和参考应力确定的数值方法及工程应用
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    Theoretical and Experimental Study of Magnetic Method for Residual Stress Testing
    磁测残余应力法的基本理论和实验研究
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    The Analysis of Small Scale Yielding Stress Field in a Crack Body
    裂纹体小范围屈服力场的分析
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    Exact Solution of Stress and Displacement at Crack Tip for Mode Ⅰ、Ⅱ of Infinite plate
    无限大平板Ⅰ、Ⅱ型裂纹尖端力场及位移场的精确解
短句来源
    Approximate Elasto-plastic Analysis of Stress and Displacement of Mixed Mode Cracks
    复合型裂纹力场与位移场的近似弹塑性分析
短句来源
    Perfectly Plastic Stress Field at a Stationary Crack Tip
    静止裂纹尖端的理想塑性力场
短句来源
    Perfectly Plastic Stress Field at a Mixed-Mode Crack tip Under Plane and Anti-Plane Strain
    平面变和反平面变复合型裂纹尖端的理想塑性力场
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  应力的
    AN ELASTIC-PLASTIC FRACTURE MODEL OF PLANE STRESS AND ITS FINITE ELEMENT ANALYSIS
    平面应力的弹塑性断裂模型及其有限元分析
短句来源
    Theory and Application of Hot Films for Wall Shear Stress Measurements and Experimental Investigation of ModelB-1 Hot Film Probe
    热膜法测量壁面剪切应力的原理和B-1型热膜的初步实验
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    The Hall Petch Relation of Brittle Fracture Stress of Metals.
    金属脆断应力的Hall-Petch关系
短句来源
    EXPERIMENTAL INVESTIGATIONS ON DETERMINATION OF THE DYNAMIC YIELD STRESS OF METALS
    材料动态屈服应力的实验测定
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    Calculation of Metal Flow Stress in Precision Closed-Die Forging of Blade
    叶片精锻中材料流动应力的计算
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  “stress”译为未确定词的双语例句
    A Study on the Stress and Damage of Fiber Winding Composite
    纤维缠绕壳体应力变形及损伤研究
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    SUGGESTION OF A PRACTICAL THEORY OF ELASTIC SHELL FOR HULL STRESS ANALYSIS
    船壳内力分析的一种实用弹性壳体理论的建议
短句来源
    Boundary Element Modeling of the Stress Singularity at the Front of Surface Crack
    表面裂纹前沿奇异性的边界元模型及其数值解
短句来源
    EXPERIMENTAL TECHNIQUE FOR MEASURING DYNAMIC FRACTURE TOUGHNESS OF ROCK UNDER STRESS WAVE LOADING
    冲击荷载下岩石动态断裂韧度测定的实验技术
短句来源
    SOLVING SOME PLASTIC PROBLEMS BY TWIN SHEAR STRESS CRITERION
    应用双剪应力屈服准则求解某些塑性力学问题
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  stress
In Vitro and In Vivo Characterization of Alpha-1A Selective Agonists and Their Utility for Stress Incontience
      
A new way to estimate the parameters in the progressive stress accelerated life testing
      
In this article a deficiency in the classical approach is pointed out and a new method for the statistical analysis of life data, especially for electronic products, under progressive stress (voltage)V(t) =Kt is given.
      
Using the Bayesian method, for certain choices of the prior distribution, several forms of estimators of the parameters in the normal stress Weibull distribution and the inverse power law model are derived.
      
In particular, when the new shape parameter of the distribution under progressive stress is given (or estimated in advance), the closed forms of these estimators are relatively simple and are numerically accessible on computers.
      
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A general theory on the realistic stress space of solids was formulated in a previous paper. In this paper, the bell stress spaces of several metals are compared, the concept of "efficiency of plastic deformation" is introduced and formulated, and the locus of deformation is discussed in connection with the theory of bell stress space. The main concepts of this paper are:

前文[1]综合四理论[2],[3],[4],[5]构成固体现实应力空间之一初步理论,大体反映固态静力学性质,对金属较对非金属固体反映得当,后者受范形变曲面有异于弥氏圆柱。总起来看,前文仅涉及原则概念,未触及具体问题。为使此理论对金属压力加工及材料试验研究有所帮助,本文进一步研究几个问题: 1)由应力空间图形比较不同金属的静力学性质; 2)受范形变效率及其计算; 3)形变过程之轨迹;并得到一定数量或质量上的结论。 同时,附带对前文[1]中一个实验记录图的错误作修正,包括在附录内。

Due to the gradual energy decay the free turbulent shear flow far downstream resembles the final stage motion of homogeneous isotropic turbulence. As in the latter case we adopt the concept of vortex motion structure of turbulence to solve the present problem. The dynamical basis of vortex motion solution is the set of equations of turbulent velocity fluctuation. In the flow field of the final stage motion of free turbulence the Reynolds number of turbulence is comparatively small, hence the non-linear terms...

Due to the gradual energy decay the free turbulent shear flow far downstream resembles the final stage motion of homogeneous isotropic turbulence. As in the latter case we adopt the concept of vortex motion structure of turbulence to solve the present problem. The dynamical basis of vortex motion solution is the set of equations of turbulent velocity fluctuation. In the flow field of the final stage motion of free turbulence the Reynolds number of turbulence is comparatively small, hence the non-linear terms in the dynamical equations can be neglected. Furthermore the size of vortices which form the turblent flow is regarded small, so within the range of each vortex the mean turbulent velocity and its gradient can be considered to be independent of the changes of the space coordinates. We now seek the following approximate solution of the linearized equations of turbulent velocity fluctuation; one part of the turbulent velocity fluctuation represents the final stage motion of homogeneous isotropic turbulence, while the other is proportional to the gradient of mean velocity, the latter part being smaller than the former. From this approximate solution the shearing component of the Reynolds stress is found to be directly proportional to the gradient of mean velocity. As a special example of the general solution we consider the case of the two-dimensional wake. Within the wake we put, furthermore, a plane grid normal to the plane of symmetry of the wake. This grid then creates in its downward stream a homogeneous isotropic turbulence field superimposed upon that of the wake. Our solution is applicable to places far downstream both from the body which creates the wake and from the grid. Since the flow here is nearer to the grid, so the turbulence level of the homogeneous isotropic turbulence would be higher than that of the wake. Consequently the conditions of the general solution can be satisfied. The present paper presents the solutions of the mean velocity and the mean squares of turbulent velocity fluctuation of the wake. These theoretical results can all be tested by experiment. On account of that we only discuss the final stage motion of free turbulence, the question how to lay down the upstream boundary condition of the flow field when solving the differential equations of the mean flow needs further consideration by other methods.

具有剪应力的自由湍流到下游相当远的地点由于能量的逐渐耗损将衰变成为类似均匀各向同性湍流的后期运动。如同处理后一种流动问题一样,我们现在根据湍流是由涡旋所组成的概念来求自由湍流的后期运动解。求涡旋运动解的动力学的基础是湍流速度涨落方程。在后期湍流场中湍流Reynolds数比较小,故方程中的非线性项可以略去。再考虑到组成湍流的涡旋尺寸比较小,在每个涡旋范围内平均湍流速度和它的坐标梯度可以近似地认为和坐标的改变无关。我们求线性化了之后的湍流速度涨落方程如下的近似解:涨落速度的一部分代表均匀各向同性湍流的后期运动:另一部分是和平均流速的坐标梯度成正比,后一部分要比前一部分为小。从这样的近似解得出的Reynolds剪应力是和平均流速的坐标梯度成正此。当作这一般解的特例我们求一个二元尾流的后期运动。在产生尾流的物体的后面还置放一个平面与尾流对称平面成垂直的栅格。这个栅格在它的下游可产生一个迭加在物体所产生的尾流场上的均匀各向同性的湍流(?)。我们的解是适用在离物体和栅格相当远处的后期运动,但此处的流场距栅格较近,所以栅格所产生的均匀各向同性湍流要比尾流的湍流度为高,因此一般解的近似条件是可以满足的。本论文给出尾流平均流速...

具有剪应力的自由湍流到下游相当远的地点由于能量的逐渐耗损将衰变成为类似均匀各向同性湍流的后期运动。如同处理后一种流动问题一样,我们现在根据湍流是由涡旋所组成的概念来求自由湍流的后期运动解。求涡旋运动解的动力学的基础是湍流速度涨落方程。在后期湍流场中湍流Reynolds数比较小,故方程中的非线性项可以略去。再考虑到组成湍流的涡旋尺寸比较小,在每个涡旋范围内平均湍流速度和它的坐标梯度可以近似地认为和坐标的改变无关。我们求线性化了之后的湍流速度涨落方程如下的近似解:涨落速度的一部分代表均匀各向同性湍流的后期运动:另一部分是和平均流速的坐标梯度成正比,后一部分要比前一部分为小。从这样的近似解得出的Reynolds剪应力是和平均流速的坐标梯度成正此。当作这一般解的特例我们求一个二元尾流的后期运动。在产生尾流的物体的后面还置放一个平面与尾流对称平面成垂直的栅格。这个栅格在它的下游可产生一个迭加在物体所产生的尾流场上的均匀各向同性的湍流(?)。我们的解是适用在离物体和栅格相当远处的后期运动,但此处的流场距栅格较近,所以栅格所产生的均匀各向同性湍流要比尾流的湍流度为高,因此一般解的近似条件是可以满足的。本论文给出尾流平均流速和速度涨落平方平均值的解。?

It is pointed out that the settlement due to deviatoric stresses is incorrectly disregarded in conventional methods of calculation. It is shown that the deviatoric tensor of stress can not be neglected, whereas the time dependent response of the soil skeleton to deviatoric stresses should be taken into account. On the base of his theory on the consolidation and flow of clay-layers "the author presents an analysis on several two dimensional problems. It is shown that the total settlement may...

It is pointed out that the settlement due to deviatoric stresses is incorrectly disregarded in conventional methods of calculation. It is shown that the deviatoric tensor of stress can not be neglected, whereas the time dependent response of the soil skeleton to deviatoric stresses should be taken into account. On the base of his theory on the consolidation and flow of clay-layers "the author presents an analysis on several two dimensional problems. It is shown that the total settlement may bo considored as consisting of three main compouents, viz. instantaneouss settlement, and settlements due to flow and due to consolidation. Settlement formulas are presented for large values of time. It is concluded that settlements in practice can not be predicted merely from oedometer tests. The consolidation in two dimensional problems turns out to behave quite differently from that of the classical one-dimensional case, as the soil can always deform laterally. The deviatoric stresses are responsible for the instantaneous deflection and the continuous flow of the clay mass.

本文指出現行的沉陷計算方法不考虑因均差应力(Deviatorie stresses)而产生的沉陷是不正确的。文中証明了均差应力張量不能忽略,而土壤的結構对均差应力的反应(与时間因素有关)则必須考虑。作者根据他自己的关于粘土層固結与流变的理論,提供几个二維問題的分析,証明了总沉陷可以分为三部分,卽瞬时下沉,因流变而产生的和因固結而产生的沉陷,并且提出了时間为很大数值时的沉陷公式。可以断言,在实际中,沉陷不能單从压縮試验来估計。在二維問題中,土壤的固结与古典的一維固結情形迥然不同,因为土壤总是有横向膨脹的。均差应力就是粘土在荷載下瞬时下沉(Instantaneous deflection)和不断流变的原因。

 
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