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the elastic parameter
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     The Study on the Elastic Parameter Inversion in Anisotropic Media with Finite Element Method and the Parallel Algorithm
     有限元法各向异性介质弹性参数反演及其并行算法的研究
短句来源
     On the basis of classical optimization theory,the nonlinear waveform inversion technique for calculating elastic constant, wave impedance and density of acoustic and isotropic elastic media is used to estimate the elastic parameter and density of elasticanisotropic medium.
     本文以经典的最优化理论为基础,将反演声波介质和各向同性弹性介质的弹性常数、波阻抗和密度等参数的非线性波形庆演方法.推广于弹性各向异性介质弹性参数和密度的反演。
短句来源
     The paper studied primarily the technology and the method on the geophysical joint inversion by the geophysics data,Elaborated the geophysical inversion foundation method research, the seismic after with emphasis has guaranteed a technical, the elastic parameter inversion method and folds the inversion technology.
     本文研究了以地球物理资料为主而进行地球物理联合反演的技术及方法,重点论述了地球物理反演的基础方法研究、地震保幅技术、弹性参数反演方法和叠后反演技术。
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     Aki approximate formula for reflection coefficient estimation is taken to analyse quantitatively the elastic parameter informations contained in sea bottom synthetic multiwave multicomponent seismic data, and to determine which elastic parameters or their combination can be derived inversively from AVO data optimally.
     本文在前人工作的基础上,应用计算反射系数的Aki近似公式,进行海底多波多分量合成数据蕴含弹性参数的定量分析,确定哪些弹性参数或它们的组合关系能最佳地从AVO资料中反演得到。
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     The elastic parameter inversion in half space is analyzed. It has important value in engineering.
     对层状半空间弹性参数的反演这一具有较强的工程应用价值的问题进行了研究 .
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  相似匹配句对
     The Elastic Character of Windkessel
     Windkessel的弹性特性
短句来源
     Design of the elastic spindle
     弹性心轴的设计
短句来源
     second, elastic analysis;
     第二,弹性分析。
短句来源
     Research of elastic paint
     弹性涂料研制
短句来源
     Scattering Parameter
     散射参数
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  the elastic parameter
Tilt and strainmeter data collected in the Friuli seismic area between 1977 and 1985 have been analyzed to study the stress-strain field and/or the elastic parameter variations in the area after the strong 1976 seismic event.
      
The elastic parameter, A, in the eight week control group was significantly greater than in the collagen reduction and three week control groups.
      
It is shown that normally the ultimate steady state is reached through a decay of inertial oscillations whose frequency decreases with increase in the elastic parameter".
      
It is shown that the time to attain the steady state increases with the elastic parameter.
      
The general expressions for the pressure distribution and the friction coefficient are given and are found to increase as the elastic parameter increases.
      
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Determination of elastic parameters of rock is the basis for technically advanced and economical underground engineering design. During underground mining the rock mass is always in a state of two or three-dimensional stress, therefore it is more reasonable to determine the elastic parameters of rock in a state of multidimensional stress. On the basis of the stress analysis of the Brazilian test and three-dimensional compression test, a new method for the calculation of elastic parameters...

Determination of elastic parameters of rock is the basis for technically advanced and economical underground engineering design. During underground mining the rock mass is always in a state of two or three-dimensional stress, therefore it is more reasonable to determine the elastic parameters of rock in a state of multidimensional stress. On the basis of the stress analysis of the Brazilian test and three-dimensional compression test, a new method for the calculation of elastic parameters is given in this paper. By application of the results of Brazilian tests of 9 different types of rock, the elastic moduli and Poisson ratios have been calculated and compared with the parameters obtained by uniaxial compression tests. The results indicate that this method is quite satisfactory for practical application.

测定岩石的弹性参数,是作好技术先进,经济合理的地下工程设计的基础。地下工程中,岩石一般处于双向或三向应力状态,因此在多向应力状态下测定岩石弹性参数较为合理。以劈裂试验及三轴压缩试验方法的应力分析为基础,本文提出计算岩石弹性参数的新方法。文中利用九种不同岩石的劈裂试验结果,求出了弹性模量及泊桑比,并与单向压缩试验求得的参数作了对比,其结果证明所提出的方法可以满足实用要求。

In this paper we examine the build up of the shear stress of a Newtonian and an Oldroyd Fluid flowing between two coaxial cylinders from the time the cylinders start to rotate till the time the shear stress reaches its equilibrium value. We also discuss the "apparent" and the "real" stress overshoot phenomenon. It is shown that an Oldroyd fluid does exhibit "real" stress overshoot phenomenon and the theoretical predictions are in good agreement with experimental data. We thus suggest that the stress overshoot...

In this paper we examine the build up of the shear stress of a Newtonian and an Oldroyd Fluid flowing between two coaxial cylinders from the time the cylinders start to rotate till the time the shear stress reaches its equilibrium value. We also discuss the "apparent" and the "real" stress overshoot phenomenon. It is shown that an Oldroyd fluid does exhibit "real" stress overshoot phenomenon and the theoretical predictions are in good agreement with experimental data. We thus suggest that the stress overshoot phenomenon may be used to determine the elastic parameters of a viscoelastie fluid.

本文研究了两同轴圆筒之间的牛顿流体和Oldroyd流体,从圆筒开始旋转到剪切应力达到它的平衡值时,剪切应力的建立过程,讨论了“表观”和“真实”应力过量现象。结果表明Oldroyd流体呈现出“真实”应力过量现象,并且理论预示结果与实验资料符合很好。因此建议利用应力过量现象来确定粘弹性流体的弹性参量。

Most of coal measure rocks are anisotropic mass of orthogonal class or rotary orthogonal class. The principles, the method and the formulae for determining the elastic parameters of anisotropic rock under in-house uniaxial compression test conditions, were achieved based on the four tensor transformation of parameters of elasticity. Based on the kinetic equilibrium equation of point and by using the sufficient and necessary conditions of the non-zero solution of the coefficients, the acoustic method...

Most of coal measure rocks are anisotropic mass of orthogonal class or rotary orthogonal class. The principles, the method and the formulae for determining the elastic parameters of anisotropic rock under in-house uniaxial compression test conditions, were achieved based on the four tensor transformation of parameters of elasticity. Based on the kinetic equilibrium equation of point and by using the sufficient and necessary conditions of the non-zero solution of the coefficients, the acoustic method for determining these parameters was developed. Finally, the principles, the method and the formulae for determining the stress with a bi-directional photostrainometer were obtained according to the solution of elasticity to the problems of rotary symmetry. The commonly used expression for measuring the stress in anisotropic mass is regarded as a special case. The formulae for calculating the absolute stress, using the stress-relief method at the bottom of a hole are discussed. All the formulae have been used in practice.

煤矿岩石多属正交类及旋转正交类各向异性体,从弹性参数的四阶张量变换出发,得出了室内单轴压缩条件下进行各向异性岩石弹性参数测定的原理、方法与算式;从点的动平衡方程出发,利用系数非零解的充要条件,得出用声学法测定参数的原理、方法与算式;按旋转对称问题的弹性解,得出了双向光应变计进行应力量测的原理、方法与算式,并使常用的在各向同性体中应力量测的表达式成为特例;论述了孔底应力解除的原理、方法与算式,解决了绝对应力量测问题。上述所有公式已用于实践,并给出了一些实际数据。

 
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