Poisson's Ratio

Poisson's ratio represents the negative ratio of transverse and longitudinal strains.

泊松比的定义为样品横向应变与轴向应变的相反数。

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higher lateral deformation and poisson's ratio as well as negative volumetric strain can be reached for higher pore pressure even though axial strain of specimen is lower.

岩样在轴向应变较低时就可获得较高的侧向变形量及泊松比，甚至负的体积应变。

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poisson's ratio is not a constant either, it increases with the depth;

泊松系数也不是常量，它随深度增加而增大。

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the poisson's ratio calibration template analysis shows that the method can effectively distinguish between sandstone and mudstone, and between sandstone and high-speed mudstone.

泊松比岩性量板分析表明，该方法可以很好地区分砂岩和泥岩，也能够有效地区分砂岩和高速泥岩；

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the influence of crack length and crack position, water level, modulus, poisson's ratio and density of core soil on hydraulic fracturing is discussed.

讨论了裂缝长度、裂缝位置、库水位、以及心墙土料的弹性模量、泊松比和密度等对水力劈裂发生可能性的影响。

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a comment on the poisson's ratio model of sintered metal powder materials

金属粉末烧结材料泊松比模型的探讨

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the result shows that the unique near-tip stress field of crack in these laminates with low poisson's ratio is helpful to improve the notch fracture strength.

结果表明：低泊松比材料独特的裂纹尖端应力场有利于提高缺口断裂强度。

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seismic responses of unconsolidated sands indicate that poisson's ratio is related to the parameters of sand with low effective stress.

非固结砂岩的地震响应研究表明泊松比参数与低有效应力的砂岩模型参数有关。

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to analyze the characteristics of tbcs such as residual stress, bond strength, fracture toughness, and crack propagation ratio, the young's modulus and poisson's ratio are important parameters.

为确定热障涂层的残余应力、结合力、断裂韧性、疲劳裂纹扩展速率等性能和特性，需要知道其杨氏模量和泊松比。

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it had been proved that carbon/ epoxy unbalanced laminates with in-plane negative poisson's ratio have higher fracture toughness and notch fracture strength.

具有平面负泊松比的碳纤维/环氧树脂非平衡复合材料层板具有很高的断裂韧性和缺口断裂强度。

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the influence of poisson's ratio on the drape shape is considered.

另外讨论了织物的泊松比对其悬垂变形的影响问题，指出正常范围内的泊松比对织物的悬垂变形影响不大。

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effect of buried depth of soil layer on poisson's ratio and lateral compressive stress-to-vertical compressive stress ratio

土层深度对泊松系数、垂直压应力与侧向压应力之比的影响

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on the basis of testing and interpretation for poisson's ratio μ along with engineering samples, the empirical equation to determine μ is proposed and can be applied in engineering.

以泊松比μ值的各种测定试验和计算方法为基础，结合工程实例，提出计算μ值的经验公式，可供工程计算中应用。

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a number of the factors which affect the velocity of stratum and poisson's ratio, as well as the influence of seismic resolution make the avo be of multi-solution.

由于影响地层速度和泊松比变化的因素较多，再加之地震分辨率的影响，造成AVO的多解性。

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the effects of changing poisson's ratio upon the vibration frequency parameters are studied.

分析了泊松比对薄板自由振动频率参数的影响，扩大了文中提出的变厚度矩形板自振频率参数计算公式的应用范围。

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in this paper, the recent advances in research on materials with negative poisson's ratio and their potential applications are reviewed.

介绍了负泊松比晶体材料的研究进展，展望了负泊松比晶体材料的应用前景。

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based on the model, the influence of the thickness, elastic modulus and poisson's ratio of the interfacial transition zone on the relative elastic modulus of concrete is analyzed in detail.

另外，基于该模型，可分析界面层厚度、弹性模量和泊松比对混凝土相对弹性模量的影响。

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by combining with dynamic isochromate pattern, the elastic modulus, poisson's ratio and dynamic material fringe value of the material measured can be obtained by the method.

如果和动光弹等色线结合，可以同时获得被测材料的弹性模量、泊松比、材料条纹值参数。

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the sensitivity analysis for poisson's ratio and coefficient of permeability has given some beneficial conclusions.

对泊松比及渗透系数的参数敏感性分析也得出了一些有益结论。

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three-dimensional photoelastic stress analysis of the anvil and the influence of poisson's ratio

顶锤的三维光弹性应力分析及泊松比的影响

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through experiments being performed by using a system of rock physical parameters testing, dynamic and static elastic modulus and poisson's ratio of rock have been obtained.

采用岩石物性参数自动测试系统，进行了实验测试分析，得到了不同岩石的动、静弹性模量和动、静泊松比。

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the influences of material characteristics including young's modulus and poisson's ratio are analyzed in the dissertation.

对于钢轨的材料特性，主要分析了弹性模量和泊松比的影响。

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the method estimates poisson's ratio by making prestack inversion of seismic data with the use of zoeppritz's approximate equation of p-wave reflection coefficient.

这种方法利用Zoeppritz关于纵波反射系数的近似方程，对叠前地震数据进行反演来估算泊松比。

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significant variations of up to 4% for seismic velocity and 9% for poisson's ratio are revealed in the source area.

在震源区地震波速变化幅度达4%，泊松比变化幅度达9%。

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it is shown that considering the shear and compression damages can describe the changing process of poisson's ratio under undrained condition.

分析结果表明，分别考虑土的剪切损伤和压缩损伤可描述饱和软黏土在不排水动荷载作用下泊松比的变化过程。

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as strain amplitude increases, the attenuation increases linearly, while young's modulus and poisson's ratio decrease approximately linearly.

随着应变振幅的增大，衰减近似呈线性增长，杨氏模量和泊松比近似呈线性下降。

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the simulation results suggest that there is no obvious size effect for poisson's ratio, compressive strength and young's modulus and fracture toughness.

结果表明：泊松比、单轴抗压强度、弹性模量以及断裂韧性的尺寸效应不明显，弯曲强度则随着模型尺寸的增大而减小。

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it can be seen from analysis that effective poisson's ratio is always smaller than the total one, depending on wave velocities and porosity of the soil.

分析表明，有效泊松比与饱和土中的波速及孔隙率有关，其值低于总泊松比；

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the solution of simplified zoeppritz equation in the paper confirms that avo responses mainly reflect the anomalies in poisson's ratio for subsurfaces.

本文通过简化Zoeppritz方程的计算，证实了AVO响应主要是地层介质间泊松比异常的反映。

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