查询词典 stretch modulus

Dynamic mechanical analysis,mechanical properties and the thermal dilatability measurements were used to study the effects of SF content on dynamic mechanical properties,impact strength,bending strength,bending modulus,specific strength,specific modulus,wear resistance and thermal dilatability.

采用动态力学、力学性能、热膨胀性能等测定研究了剑麻纤维的加入量对复合材料的动态力学性能、冲击强度、弯曲强度、弯曲模量、比强度、比模量、耐磨性能、热膨胀性能的影响，用扫描电镜观察了材料冲击断面和磨损面的形态。

The in-plane equivalent elastic modulus and tensile strength of stitched composite laminates are studied, and its found that the in-plane equivalent elastic modulus decreases with the increase of stitch density, stitch thread diameter, maximal misalignment angle and the distortion width, and the range is about 5%. The tensile strength of stitched composite laminate increases with the increase of stitch step and decreases with the stitch space.

研究结果表明：随着缝纫密度、缝纫线直径、最大纤维偏转角和缝纫变形区宽度的增加，缝纫复合材料层合板面内等效模量逐渐降低，最大降幅一般在5%左右；缝纫复合材料层合板的拉伸强度随缝纫针距的增加而增大，随缝纫行距的增加而降低，因此缝纫密度对拉伸强度的影响程度要看具体的缝纫针距和行距。

We employ ab initio plane-wave pseudopotential density functional theory to calculate the coordinate,the equilibrium lattice parameters,bulk modulus,shear modulus and elastic constant,and those calculated results agree well with the other experimental data and the theoretical data which have been published.

本文采用平面波赝势密度泛函理论方法计算了PtN2的坐标、平衡态的晶格常数、体模量、剪切模量和弹性常数，计算结果与已有的实验值和理论值吻合较好。

The experimental results showed that the elastic modulus and shear modulus decreased with the increasing of temperature in general.

实验还发现材料在结晶方向和垂直于结晶方向的弹性常数和蠕变特性等力学性质具有很大的差异。

It is indicated that the best ratio of external radius to inner radius relates not only to the yielding limit, elastic modulus and linear strengthening elastic modulus but also to Bauschinger effect factors.

公式表明最佳径比不仅与材料的屈服极限、弹性模量、线性强化弹性模量有关，还与鲍辛格效应系数有关。

As the carbon/ epoxy composites for the example, when fiber volume content and braid angle is fixedness, the influence of the 3-dimensional braided composites effective modulus that caused by thickness is more than by width, when width larger certain value and thickness larger certain value the modulus that composite is steady.

宽度变化对于E1 1影响较大，其他模量影响很小，当宽度大于一定值趋于稳定；而厚度的变化，对于复合材料不同弹性常数影响都很大，当厚度达到一定以后各个弹性常数的变化趋于稳定。

The main research contents and results are described as follows:The constitutive equation of the elastomer modeled by the fractional derivative Maxwell model has been investigated. Based on the thermodynamics constraints analysis of the physical parameters of the fractional derivative Maxwell model, the relaxation modulus and the creeping modulus of the model are analyzed.

本论文针对该目的，采用理论研究与试验研究相结合的方法，首先研究了胶泥缓冲器的耗能机理，进而设计开发了较理想的缓冲器产品，具体研究内容和成果如下：研究了胶泥的本构模型——分数微分Maxwell模型。

This paper studies the stress of gravity dam heel with careful numerical simulation, and analyses the effect of the variety of the elastic modulus of homogeneous or non-homogeneous foundations on the principal tensile stresses of gravity dam heel. The conclusions are as follows:① When the elastic modulus of homogeneous dam base and variated element in the critical place is changed with the same the fluctuation, the effect on the dam heel stresses caused by the latter is much more prominent than the former one.

本文通过精细网格模拟研究了重力坝坝踵应力情况，就均质坝基和非均质坝基弹模变化对坝踵主拉应力的影响，得出了如下结论：①均质坝基弹模与非均质坝基敏感区域的变异单元弹模变化相同的幅度，非均质情况引起的坝踵应力的变化远大于均质情况。

It is proved by the analytical and numerical method that the modulus of the Z transform of a finite impulse response sequence has no extreme values at poles (with maximums along imaginary axis and no extreme values along real axis), and the negative second order derivative of the modulus normalized along frequency axis with respect to angular frequency has maximums at the poles.

根据实测瞬态电磁脉冲响应，较好地反演了导体球和导体长椭球的冲激响应，测得了它们的雷达截面和谐振频率。用解析与数值相结合的方法证明了有限冲激响应序列Z变换的模在极点无极值（沿虚轴有极大值，沿实轴无极值），而沿频率轴的归一化值对角频率的负二阶导数在极点有极大值。

Given the incompressibility of water, a relation between specific elastic storage, compressibility modulus and deformation modulus was inferred by applying current related formulas.

主要完成了如下工作：(1)在假定水不可压缩的情况下，利用已有的相关公式推导了单位弹性释水系数与土层压缩模量、变形模量之间的关系。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我