Consider the case data to research the prediction of oil and gas using elastic parameters, posed the method that combine lame's constant and shear modular to predict oil and gas.
结合川西坳陷中段的实际资料进行利用弹性参数进行油气预测的试验性研究，建立了具有创新意义的联合使用拉梅常数和剪切模量进行弹性参数预测的方法技术，提出了μ/λ参数进行油气预测的创新方法。
It is considered that the fluid can be modeled as a viscoelastic medium with equivalent Lame constant. In addition, for thin layer at low frequencies, the porous frame may be assumed as motionless. In this case, the reduced control equation of pore fluid in porous material is obtained by Biot's theory. Similarly, the pore fluid is also equivalent to an elastic medium. The finite element formulation is derived by using the Galerkin technique. The influences of the fraction of porous medium, the material constants of pore fluid in porous medium of the inhomogeneous layer, the layer thick and different arrangements of inhomogeneous layers on the reflection characteristics of the structure were analyzed.
文中将流体等效处理为弹性体；对多孔介质，提出在薄层、低频下忽略其骨架的运动，由Biot理论获得退化的孔中流体的基本方程，并将其等效处理为弹性体；利用Galerkin方法建立了有限元方程，分析了非均匀层中多孔介质的体积分数，孔中流体材料参数、层厚度及多层非均匀介质的不同迭合对其结构反射特性的影响。
The superstructure has used the model of elastical constitutive relation; the pile-group foundation has quoted the soil-pile equivalent compound model. It has been analyzed the constitutive relation for soil-pile equivalent compound which regarded as the transversely isotropic body this construction relations, and determined the corresponding elastic constant.
上部结构采用线弹性本构模型，下部群桩基础引用了桩土等效复合体模型，分析了将桩土等效复合体视为横观各向同性体的本构关系，确定了相应的弹性常数。
Action stretch experiments of the yams were performed and it was found that the critical twist factor of PTT staple yarn was around 360. Its good elastic recovery was demonstrated by constant rate of extension test and creep test showed that twist factor has insignificant effect on its elastic recovery.
通过纱线的强伸性能实验，初步得出了PTT短纤纱的临界捻系数范围在360左右；定伸长反复拉伸实验证明了PTT短纤纱具有良好的弹性回复性能；同时，由蠕变实验可以看到捻系数的大小对其弹性回复性影响不显著。
As an example, a straight dislocation parallel to the quasiperiod axis moving with a constant velocity is considered. The distribution of the dislocation-induced elastic field and the energy per unit length of a dislocation are derived, which are compared with those for a stationary dislocation and a moving dislocation in a classical elastic medium.
我们具体讨论了沿准周期方向的直位错的运动情况，获得了由它所引起的准晶内部的弹性位移场和应力场分布以及单位长度上它所携带的能量的表达式，并将所得的结论与静止位错的情形以及与经典弹性理论中运动位错的情形作了一些比较。
The equilibrium lattice constant values, the formation energies and the elastic constant values of ordered compounds are calculated in this work.
本文还系统地计算了7种有序合金的双空位形成能。其中FeAI和NIAI合金的计算结果与其它理论的结果符合较好。
Poisson's ratio: The ratio of the transverse contraction to the longitudinal extension when a rod is stretched:σ= d/d L/L where d = change in diameter d and L = the change in the length L. See also elastic constant. The ratio of the velocities of P- and S-waves, Vp and Vs can be expressed in terms of Poisson's ratio: Vp 2(1 σ)= V s 12σ 1/ 2 For liquids σ= 1/2 and Vs vanishes.
泊松比：当一杆被拉伸时，它的横向收缩和纵向伸长之比：d/d σ= L/L 其中 d 是直径 d 的变化量，L 是长度 L 的改变量，见弹性常数弹性常数。P-波和弹性常数 S-波的速度 Vp 和 Vs 之比可用泊松比来表示：Vp 2(1 σ)= V s 1 2σ 1/ 2 液体的泊松比为σ= 1/2，Vs 消失。
For an elastic material, Hooke's Law states. that the ratio of strain to stress is constant.
对于弹性材料来说，虎克定律表明应力和应变之比是常数。
Considering the energy conservation law, we deduce a general formula to calculate the dielectric constant of alkali halide crystals(including the crystal structure of NaCl and CsCl) using the theory that the macroscopic electric storage energy is equal to the elastic displacement energy of...
本文结合自然界的能量守恒关系，利用电介质在电场作用下的宏观电储能等于微观偶极子的弹性位移能的方法，推导出一个通用公式来计算碱卤晶体(包括NaCl晶体结构，CsCl晶体结构)的εr，理论值和公式计算值对比十分吻合。
One approach to treat material viscosity is to assume the elastic constants as complex constants, in which the real part is the elastic constant and the imaginary part is the viscosity that is related to the frequency.
处理材料粘性的一般办法是将粘性项作为虚数部分插入到本构关系中，从而使得原来的弹性常数转变成了复弹性常数。
In the experiment, the grating is mounted and glued on one side of a cantilever beam made with a material having a relatively large elastic constant.
在实验中，光栅安装和胶合一方悬臂梁同一种材料具有较大的弹性常数。
There is a constant shuffling, as potential energy is transformed into kinetic or elastic energy, and then back again.
回首的能量转换成动能和弹性势能，重新回到人体，这一过程不断往复（shuffling在此处不知该如何解释较好）。
The complex nonlinear problem is transformed into simple linear one in this method. The validity of this method is validated by instance. The elastic-plastic deflection and energy absorption of general regid frame with constant cross-section member can be calculated with this method.
该方法将复杂的非线性问题转化为简单的线性问题，使设计者在设计阶段就可对ROPS的能里吸收性能进行有效的预测，并可推广到一般等截面构件组成的刚架系统的弹塑性变形和能量吸收的计算。
The warm extrusion forming process of an outer race of constant velocity universal joint has been simulated by using the thermo-mechanically coupled elastic-plastic FEM.
以轿车等速万向节滑套为研究对象，采用热机耦合弹塑性有限元方法对滑套的温成形过程进行了数值模拟，得到了工件和模具的温度场，并通过工艺实验对模拟结果进行了验证。
Based upon theoretical and experimental methods of acoustics and vibration, the dynamic characteristics of cutting processes are researched systematically. The modes of circular saw plates in clamping are very dense, and have very little damping. Under the nodal diameter modes, the plate would radiate very intensive sound. A simplified method of estimating quickly the modal parameters of elastic circular plate structures with even thickness and at a constant clamping ratio is also advanced.
针对圆锯片结构的法兰夹紧与约束边界等特征参量，采用有限元分析、脉冲锤击声振响应模态分析及砂型正弦扫频激振实验等方法的有机综合，系统地研究了圆锯片结构的动态特性，并提出了基于理论和实验的任意夹紧比下圆板结构的固有频率和振型等的快速估算方法，提出并验证了声响应法用于声模态分析的可能性和技术依据。
Last, Nano Indenter XP was employed to measure the mechanical properties of elastic substrate and its upper probe. When the thickness of PDMS and PI was 150μm and 50μm respectively, the spring constant of elastic substrate was 4582 Nm-1, and spring constant of the upper metal probe was 7317 Nm-1. DC probes and HP 4194A Impedance/Gain-phase Analyzer were used to measure the electrical properties of the fabricated probe. The contact resistance from the probe tip to the end of stripline was 1.4Ω. In the frequency range of 5 to 40 MHz, the characterized impedance between two probes was larger than 20 kΩ, and the capacitance was from 0.19pF to 0.28 pF.
采用Nano Indenter XP纳米压痕仪对弹性基底和探针结构进行了力学性能测试，当PDMS层厚度为150μm、聚酰亚胺层厚度为50μm时，PDMS和聚酰亚胺基底的弹簧常数为4582 Nm-1，上方电镀金属探针结构的弹簧常数为7317 Nm-1；采用直流探针和HP 4194A阻抗分析仪对制备后的探卡结构进行了电学性能测试，从探针到引线末端的直流接触电阻为1.4Ω，在5-40 MHz测试频率内，探针间特征阻抗大于20 kΩ，电容在0.19pF至0.28 pF之间。
In the base of calibrating the elastic constant of cantilever and analysis adhesion force, the force information from force curve was obtained and the elastic modulus of single voxel was calculated.
考虑了成型点剩余部分形变对结果分析的影响，在标定微探针弹性系数和对粘附力进行分析的基础上，提取了力曲线中所包含的力学信息，推算出了成型点的弹性模量，得到了成型点的弹性模量低于宏观材料弹性模量的结论。
Using the modified analytical embedded atom method, the lattice dynamical properties of B2 FeAl alloy, including the lattice constant, formation heat, elastic constants, phonon dispersion curves, density of states, specific heat, Debye temperature and linear expansion coefficient, have been calculated.
应用改进分析型EAM模型，系统计算了B2FeAl合金的晶格动力学性能，包括晶格常数、形成热、弹性常数、声子谱、态密度、比热、德拜温度和热膨胀系数等，并将计算结果与已有实验数据及其他理论计算结果进行了比较。
Based on the equilibrium equation of an arch element the cubic nonlinear dynamic model with second order is established and the nonlinear differential dynamic system without constant term is obtained through a transfer process of T=U+b. Hence three fixed points and the homoclinic orbits are found. The critical condition of the chaotic vibration of the elastic arch is given by using the method of Melnikov function. The numerical results of the stationary and chaotic motion are given and discussed.
首先利用拱的单元平衡方程建立了拱的二阶三次非线性动力学模型；然后通过变换使方程转化为不含常数项的非线性微分动力系统，并由此得到无扰动系统的3个不动点与同宿轨道；再用Melnikov函数法给出了发生混沌的临界条件；最后给出了该系统出现定常运动和混沌运动的数值结果。
Study on optimum design of ply orientation angles for natural frequencies of composite plates with random elastic constant.
对具有随机弹性常数的复合材料层合板的固有频率优化问题进行研究。