查询词典 Poisson ratio

We analyzed relations between AVO characteristic parameters in various combinations of Poisson's ratio and reservoir thickness by means of AVO forward modeling.

通过正演AVO模拟，分析了不同泊松比和储层厚度组合下，AVO效应特征参数之间的关系，提出了泊松比参数反演方法，得出了反演经验公式。

Steel fiber ; high-strength concrete ; elastic modulus ; poisson's ratio

钢纤维；高强混凝土；弹性模量；泊松比

In this study, a novel crisscross-shaped micro test structure to characterize the Poisson's ratio of thin film materials is proposed.

中文摘要本论文提出一创新十字形（Crisscross-shaped）微结构，用於量测薄膜材料之卜松比。

Taking into account the effect of material nonlinear constitutive relation and the variation of Poisson's ratio under loading, the finite element models for axially loaded combined section columns were proposed.

由于管材和核心材料在受力过程中的相互作用，即管材对核心材料的约束作用，使核心材料的强度得以提高，塑性和韧性性能大为改善。

The research results show that there is a good positive correlativity between dynamic modulus of elasticity and the longitudinal or transverse wave velocity, but there is no such positive correlativity between dynamic Poisson's ratio of the rocks and its longitudinal or transverse wave velocity.

研究结果表明，煤系岩石的动弹性模量与岩石的纵波或横波速度具有很好的正相关关系，而与泊松比不具有这种正相关关系。

It is shown that the abruptness of the displacement or deformation at a certain characteristic location and the connectedness of plastic zone are not depended on the values of elastic modulus and Poisson's ratio.

对比计算表明，弹性模量E与泊松比v的不同取值对边坡濒临破坏时特征点位移的突变性和塑性区的贯通性基本没有影响，因而对边坡安全系数的准确确定没有影响。

The conclusions are that the mode II dynamic stress intensity factor increase with the shear relaxation parameter of viscoelastic materials increasing, with swelling relaxation parameter decreasing, and with shear module and Poisson's ratio of elastic materials increasing.

得到Ⅱ型动应力强度因子随着粘弹性材料的剪切松弛参量的增加而增大，膨胀松弛参量的增加而减小；随着弹性材料的剪切模量和泊松比的增加而增大。

The results show that the major contribution to DOS of Mg and Pb are the 2p orbit of Mg and the 5d orbit of Pb, followed by the 3s orbit of Mg and the 6p orbit of Pb, the 6s orbit of Pb is the smallest one. There are a large number of charges around Mg, it has the characteristics of typical metal bond. Mg and Pb share some charges to form covalent bond, but the distortion of the charge at the junction is little; the proportion of covalent bond is less than the metal bond, Mg2Pb is semimetal. The elastic modulus and shear modulus of Mg2Pb are 68.6 and 27.9 GPa, respectively. Based on Pugh empirical criterions and Poisson's ratio, Mg2Pb is brittle in nature.

结果表明：Mg和Pb对态密度的贡献主要是Mg的2p轨道和Pb的5d轨道，其次为Mg的3s轨道和Pb的6p轨道，Pb的6s轨道贡献最小；在Mg原子周围有大量的电荷存在，呈典型的金属键特征，Mg、Pb之间存在共用的电荷，有较强的离域性，以共价键形式存在，但交界电荷的畸变不大，故共价键所占比例较少，金属键所占比例较大，Mg2Pb化合物呈半金属性；Mg2Pb的弹性模量和切变模量分别为68.6和27.9 GPa，Pugh经验判据和泊松比均表明Mg2Pb具有脆性。

of comparing practical case evaluation with gas testing result is that the gas- bearing layer in VU Area can be identified by cross-plot of Poisson's ratio and compressional slowness, cross-plot of tangential stress and compressional slowness, as well as negative anomaly of tangential stress.

通过实例评价结果与试气结果的对比认为在YU地区，泊松比与纵波时差交会，切向应力与纵波时差交会，以及切向应力的负异常，均能较好地识别气层。

Combined P and S receiver functions from seismograms of teleseismic events recorded at 25 temporary broadband seismic stations in the southeastern Tibetan Plateau are used to map the Moho depth, Poisson′s ratio and the thickness of the mantle transition zone.

本文使用位于青藏高原东南缘的25个地震台站的远震数据，采用P波和S波接收函数的方法研究了台站下方的Moho深度、泊松比以及地幔过渡带的厚度。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。