查询词典 Young's modulus

Diamond has many outstanding physical, chemical, optical, mechanical, and electrical properties such as the highest thermal conductivity, the extreme chemical inertness, the highest known hardness, the lowest compressibility of known material, high in Young's modulus, low in friction coefficient, wide in band gap, and a wide optical transparency bandwidth.

中文摘要钻石拥有许多优异的物理、化学、光学、力学与电学特性，例如它拥有最高的热传导系数、具化学惰性、具有最高硬度、高杨氏系数与低摩擦系数、具有宽能隙与宽的光学穿透频域。

In the present study, the effect of centrifugal force was investigated by three dimensional finite element analyses; the vibration characters of random mistuned blade-disc were also being investigated by probability methods and the Young's modulus of material of all blades are regarded as random parameters.

结果表明，离心力对失调叶片轮盘系统局部化振动有减弱作用；所有叶片弹性模量在5%误差范围的随机失调系统，其固有频率与非失调相差很小，即失调叶片—轮盘系统可以按照循环对称结构进行模态分析。

An equal cross-section blade was investigated and a finite element model was built parametrically. Geometrical parameters (such as length, width and thickness), material parameters (such as young's modulus and density) and speed of blade were considered as input random variables while the static frequencies and dynamic frequencies were output random variables. Combining the finite element method, response surface method and Monte Carlo method, the statistical properties and cumulative distribution functions of static frequencies and dynamic frequencies were obtained. Probability sensitivities analysis, which combined the slope of the gradient and the width of the scatter range of the random input variables, was applied to quantitatively evaluate the sensitivities of static frequencies and dynamic frequencies with respect to the random variables. The Scatter plots of structural responses with respect to the random input variables were illustrated how to adjust the values of the static frequencies and dynamic frequencies by changing input random variables.

文中以某试验台用汽轮机等直叶片为研究对象，考虑几何参数、材料参数和转速的随机性，通过有限元参数化建模，将确定性有限元方法、响应面方法和Monte-Carlo模拟法相结合，从而获得了叶片静频、动频的统计特性和累积分布函数；同时考虑随机变量的梯度和离散范围对静、动频的影响，通过概率敏感性分析，定量地判断出叶片静、动频对随机输入变量的敏感性；通过绘制叶片静、动频与输入变量的散点图，定量地分析了如何改变随机变量以调整静、动频率的方法。

The study shows that the effect of Young's modulus is largest, then hardening coefficient, initial yielding stress, hardening exponent and anisotropy r0 . While the effects of anisotropies r4 5 and r9 0 variation can be ignored.

研究结果表明，杨氏模量的波动对板料回弹量的影响最大，其次分别为硬化系数、初始屈服应力、硬化指数及各向异性系数r0的波动，而各向异性系数r4 5及r9 0的波动对板料回弹量的影响可忽略，且数值模拟分析材料参数对板料回弹量的影响趋势与理论分析一致。

The relation between the relative Young′s modulus of the models and the anisotropic size ratio was obtained and compared with theory pred...

结果表明，建立的开孔和闭孔随机泡沫模型能较好地反映泡沫材料的各向异性力学性质；且开孔和闭孔泡沫的各向异性力学性能均与泡沫材料的相对密度有关。

For the characterization of the mechanical properties of thin films the Young's modulus plays an important role.

在薄膜材料的力学性能测定中，弹性模量是衡量材料软硬程度的重要指标。

The Young's modulus of silicon material is deduced from the measurement result.

应用天平测试装置对单晶硅悬臂梁进行了力—挠度特性测试，并由此得到材料的杨氏模量。

Results indicate that the strength of infused resin is related to the strength of CFRP sheets, the influence of aging on Young's modulus and extensibility is slight.

结果表明，浸渍树脂抗拉强度与碳纤维片材抗拉强度有一定关系，而伸长率和弹性模量的变化受树脂耐久性能的影响不明显。

Due to spatial variability of material property, Young\'s modulus is assumed to be a stochastic process.

考虑随机因素的有限元称为随机有限元。

The Young's modulus is about 0.36 TPa nm, which agrees perfectly with the results of previous analysis by other researchers.

在碳纳米管的弯曲分析中，将计算结果和材料力学中的理论结果进行了比较，发现随着碳纳米管半径的增大，计算结果与理论值趋于一致。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。