查询词典 section modulus

At the same time, under the condition of small strain, firstly, the secant shear modulus was always larger than the tangent shear modulus. Secondly, when the logarithmic coordinates were applied to describe shear strain, the decrease of shear modulus with shear strain could be expressed by reversed S shape curve with two inflexion points, and through analyzing and validating, the deduced equation could perfectly reflect this characteristic. Finally, different stress paths and strain areas would lead to different attenuation trends.

而且，在小应变范围内，割线剪切模量总是大于切线剪切模量；当剪切应变采用对数坐标表示时，剪切模量随着剪切应变的增加而衰减，且衰减的规律都可以表示为带有两个拐点的反S型曲线，经分析验证本文所得公式3可以对此特性进行很好地反映；但应力路径、应变范围不同其衰减幅度不同。

The low-temperature peak corresponds to the minimum of relative dynamic modulus and is attributed to elastic modulus softening effect caused by the anelastic motion of the phase interface. The high-temperature peak corresponds to the inflexion point of relative dynamic modulus and the volume change produced by the normal motion of the phase interface is responsible for the peak.

低温内耗峰对应于相对动力学模量曲线最小值，是相界面切向滞弹性运动引起的模量软化所致；高温内耗峰对应于相对动力学模量曲线拐点，是相界面法向运动引起的体积变化所致。

Increase of 47% in the unconned compression strength compared to increase of 26% in the secant modulus at the maximum stress level, 25% in the secant modulus at half of the maximum stress level, and 23% in initial tangent modulus.

这一变化的数额膨润土10日至15 ％，导致平均增加了47 ％的无侧限抗压强度相比增加了26 ％的割线模量的最高应力水平， 25 ％的割线模量的一半的最大应力水平， 23 ％的初始切线模量。

Applying the Whitney-Riley model to the soil-root complex, calculating formulas, which were related to modulus of elasticity E in direction of plant roots growth, modulus of elasticity E to be vertical to direction of plant roots growth and shearing modulus G in plane of plant roots growth, were established.

运用Whitney-Riley模型，推导出土壤—根系复合体根系生长方向的弹性模量E、垂直于根系生长方向的弹性模量E和根系生长平面的剪切模量G等工程常数的理论计算公式，为进一步研究土壤—根系复合体工程特性提供了一种方法，具有一定的参考价值。

Three optimal structures were gotten in this paper by the model of elastic modulus along the grain, elastic modulus in tangential direction, in-plane shearing modulus and laminate rigid:①0/90/0/90/0/90/0/90/0, the outside four veneer is modified, the along grain MOE and MOR are 8377MPa, 60.9MPa respectively; The across grain MOR is 35.1 MPa, and TS is 17.2%.

4通过应用杨木单板顺纹弹性模量、横纹弹性模量、面内剪切模量及层合板刚度模型进行杉木胶合板结构设计，经多次修正，得出较好结构有以下几组：①0/90/0/90/0/90/0/90/0，最外四层为杉木改性单板，顺纹弹性模量和静曲强度分别达到了8377MPa，60.9MPa；横纹静曲强度为35.1 MPa，吸水厚度膨胀率为17.2%。

In the second chapter, we introduce the definition of pointwise convex modulus. The relation between numbers of pointwise convex modulus and relevant geometric properties will be discussed. we research the characteristics of numbers of pointwise convex modulus .

在本文第二部分引入了点态凸性模的定义，并讨论了点态凸性模的取值与相关几何性质之间的关系，研究了点态凸性模取值特点。

In this paper, material properties of the segment of the porous metal-bonded diamond grinding wheel were researched by finite element simulation. Segments were manufactured according to the design result and their elastic modulus was measured. The key points are as follows: The influence of the porosity on the elastic modulus was analyzed through a finite element method. In the FEM model, the design variable only includes the porosity, and the tetrakaidecahedron model is applied as the microstructure model of porous metal matrix. The corresponding porosity was decided in order to meet the requirement of the elastic modulus.

本文利用有限元软件对多孔金属结合剂金刚石砂轮节块的材料性能进行了数值模拟计算，依设计结果制备了节块试样，并测试了节块的弹性模量，主要内容有： 1、充分借鉴多孔材料结构设计和分析的方法，以十四面体模型为多孔金属胎体的微观结构模型，以孔隙率为设计变量，通过有限元分析，计算出满足一定弹性模量要求的多孔金属胎体的孔隙率范围。

The results show that the casing external collapse load could be lowered to some extent by increasing the cement sheath elastic modulus. But the effect of increasing elastic modulus is much less than that of decreasing the elastic modulus of cement sheath.

研究结果表明，增加水泥环弹性模量对套管外挤载荷有一定的减缓作用，但效果远没有降低水泥环弹性模量明显。

On the basis of numeric results, the laws of how the mechanics of fiber and matrix, the volume fraction, aspect ratio and the orientation state of fiber react to the Yangs modulus, shear modulus, poisson modulus of short fiber reinforced composites are been investigated.

从数值上研究了纤维和基体的力学性能、纤维在复合材料中的体积百分数及其长径比、纤维取向状态对短纤维增强复合材料的杨氏模量、剪切模量、泊松比等力学性能的影响规律。

The method of defining pedestal pile foundation deformation modulus is especially discussed in this article, and it takes the Mindlin solution as the starting point using mathematics method to get the Poissons ratio which is the factor influencing foundation soil deformation modulus , and a deformation modulus calculating equation is finally determined.

其中特别论述了扩底桩地基变形模量的确定方法，并从Mindlin解出发利用数学方法得出了影响地基土变形模量大小的因素—泊松比μ，初步确定了比较完善的变形模量计算公式。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。