查询词典 Poisson ratio

The high value of Poisson s ratio and low value of elastic anisotropy ratio imply that the interatomic force in ZrCr_2 is weakly directi...

并计算了层错与位错的弹性交互作用。对ZrCr2Laves相的力学特性和变形机制进行了讨论。

The results show that the calculated elastic properties are close to the experimental results. The high value of Poisson's ratio and low value of elastic anisotropy ratio imply that the interatomic force in ZrCr2 is weakly directional.

结果表明：计算得到的ZrCr2 Laves相的弹性性质与实验结果相近，其泊松比和弹性各向异性系数大小说明ZrCr2 中原子键合的方向性并不强烈； ZrCr2 Laves相的内禀和外禀层错能分别为112 mJ/m2和98 mJ/m2。

Results show that the sound absorption coefficient of the polymers with negative Poisson's Ratio is larger than that of the polymers with positive Poisson's Ratio.

优化结果表明：负泊松比高分子材料的吸声系数明显大于正泊松比高分子材料的吸声吸声系数。

Methods With the aid of correspondence principle of elasticity and viscoelasticity and the integral transform relations the accurate expressions of viscoelastic Poisson's ratio were derived based on some expressions of elastic Poisson's ratio.

利用弹性与粘弹性的对应原理和积分变换，由弹性泊松比分析推导出粘弹性泊松比表达式。

The results of numerical analysis show that the elastic modular and the poisson ratio have no effect on two-dimensional bearing capacity, but can affect the ultimate bearing capacity of three-dimensional foundations and control the convergence and precision of finite element calculation; the earth pressure coefficient controls the geostatic stress of foundation, sequentially affects the ultimate bearing capacity of foundations and the convergence of numerical calculation. When calculating the ultimate bearing capacity of undrained saturated foundation, the complete formulation exists shear locking, and reduce formulation exists hourglassing, so the hybrid formulation is suitable to imitate the geomaterial. When the soil obeys nonrelevent flow rule, the yielding function is different from potential function, and the elastic-plastic matrix of soil is asymmetric, so the unsymmetry numerical solver and appropriate finite element mesh is required.

研究结果表明，土体弹性模量和泊松比对二维基础极限承载力没有影响，但是影响着三维矩形基础的极限承载力，控制着ABAQUS数值算法的计算精度与收敛速度；地基土压力系数控制着地基土体中的地应力平衡，从而影响着二维条形基础和三维矩形基础的极限承载力和地基破坏包络面；对于不排水饱和软黏土地基，常规的完全积分单元会造成剪力自锁现象，而减缩积分单元则存在过于柔化的现象，故采用杂交单元来模拟较合适；当土体服从非关联流动法则时，屈服函数与塑性势函数之间存在差异，从而导致土体弹塑性矩阵呈现非对称性，在有限元计算中必须采用非对称数值解法，并且合理地划分单元才能对极限承载力进行准确求解。

It was proved that deformation modulus, compression strength, tensile strength, shear strength and Poisson ratio of lamprophyre could not meet the design requirements after high pressure cement grouting, so chemical grouting was proposed to treat the lamprophyre. High permeable epoxy resin was employed to grout the weathered lamprophyre.

因仅靠单纯的高压水泥灌浆无法使岩体的变形模量、抗压、抗拉、抗剪强度以及泊松比等物理力学指标达到设计要求，应有针对性地采用化学灌浆方法对煌斑岩脉进行加固处理。

The tests show that concrete Poisson"s ratio is approximate same value between cylinder and prismoidal sample, and stability length of tested concrete Poisson"s ratio with cylinder sample is longer than with prismoidal sample.

理论上分析了采用圆柱体试件测定混凝土泊松的应变特征，通过试验得出由两类测试试件得到的泊松比近似相同，圆柱体试件测定泊松比时较棱柱体试件的稳定段较长。

Linearity's sizes in any direction are minified by 1/35. Experiments on the qualities of materials of organic glass identify its modules of elasticity, effect caused by distortion from added load—drawing on deformation curves, the poisson ratio value of μ, adhesion strength test of materials and also the paper gives analysis on the results of the experiment.

有机玻璃材料的性能试验中，根据模型材料受温度变化影响明显的特点，测试了受拉弹性模量随温度变化的关系，波松比、原材料及其粘结强度以及加载变形时间效应，在弹性模量测试过程中，因其受温度变化影响较明显，故在试验时应维持室温稳定不变，并运用线形回归分析法确定等时线的斜率作为弹性模量值。

Linearitys sizes in any direction are minified by 1/35. Experiments on the qualities of materials of organic glass identify its modules of elasticity, effect caused by distortion from added load-drawing on deformation curves, the poisson ratio value of u, adhesion strength test of materials and also the paper gives analysis on the results of the experiment.

有机玻璃材料的性能试验中，根据模型材料受温度变化影响明显的特点，测试了受拉弹性模量随温度变化的关系，波松比、原材料及其粘结强度以及加载变形时间效应，在弹性模量测试过程中，因其受温度变化影响较明显，故在试验时应维持室温稳定不变，并运用线形回归分析法确定等时线的斜率作为弹性模量E值。

Taking the surrounding rock of deep-buried caverns at the Jinping Second Class Waterpower Station as an example,uniaxial compression tests are performed to study the influence of temperature on the Poisson ratio and elastic modulus under different temperatures.

选取锦屏二级水电站引水隧洞围岩大理岩作为试样，进行不同温度条件下的单轴压缩试验，分析温度作用对大理岩弹性模量、泊松比等力学参数的影响。

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。