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   layered elastic medium 的翻译结果: 查询用时:0.173秒
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layered elastic medium
相关语句
  层状弹性介质
     Layered elastic medium inversion using genetic algorithm
     用遗传算法反演层状弹性介质
短句来源
     Simultaneous inversion of three parameters in layered elastic medium
     层状弹性介质三参数同时反演
短句来源
  “layered elastic medium”译为未确定词的双语例句
     With the aid of theory on wave propagation and Snell theorem, a theoretical study is presented on propagation characteristics of plane wave when it passes through layered elastic medium. Exact solution of dynamic equation is derived. The curves which represent the relations between transiting wave amplitude and medium parameters and incident angle are obtained by numerical computation.
     运用波的传播理论及Snell定律研究了平面P波通过弹性层状介质时的传播特性 ,求得波动方程的解析解 ,在此基础上利用数值计算绘出了反射 透射系数与介质参数及入射角的关系曲线。
短句来源
     With the aid of wave propagation theory and Snell theorem,a theoretical study on propagationcharacteristics of plane SH wave passing through layered elastic medium is conducted. Exact solution of dynamic equation is derived. The curves, representing the relationship among reflection and transmission coefficients,medium parameters and incident angle,are obtained by numerical computation.
     运用波的传播理论及Snell定律研究了平面SH波通过弹性层状介质时的传播特性,求得波动方程的解析解,在此基础上,利用数值计算绘出了反射﹑透射系数与介质参数及入射角的关系曲线。
短句来源
  相似匹配句对
     IMPEDANCE INVERSION FOR ELASTIC LAYERED MEDIA
     层状弹性介质的波阻抗反演
短句来源
     The Analysis of Elastic Fields of Hard Layered Solids
     硬涂层半空间体的弹性场分析
短句来源
     Layered elastic medium inversion using genetic algorithm
     用遗传算法反演层状弹性介质
短句来源
     Simultaneous inversion of three parameters in layered elastic medium
     层状弹性介质三参数同时反演
短句来源
     Finite Element Simulation of Steady Wave Motion in the Visco-elastic Layered Medium
     粘弹性成层介质中稳态波的有限元模拟
短句来源
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  layered elastic medium
Averaging of a Layered Elastic Medium with Low Dynamic Dissipation at the Interlayer Boundary
      
Sensitivity problems that arise when modelling the seafloor as a layered elastic medium are analyzed.
      


In this paper, the Mindlin's solution of plane strain and axis-symmetrical problems within an n-layer elastic system is obtained by the integral transform technique and the recurrence laws of matrices. Using this solution as the fundamental solution, a simple method was" established to calculate displacements in any internal point within multi-layered elastic medium by the somigliana formula. By this method, the progrmming is easy, while the accuracy and the speed of computation are high.

本文利用积分变换及矩阵递推方法得到了任意n层弹性体平面应变及轴对称问题的Mindlin解。再把此解作为基本解,利用Somigliana关系式,得到计算多层弹性体内部任意点位移的简便方法。利用此法很容易编制程序,且具有较高的计算精度与速度。

Geophysical inversion problem can be considered as a nonlinear optimization problem. The objective function commonly used in solution evaluation is nonlinear and multiextreme. The inversion methods based on local linearization are usually lost in local maximum values,and they seriously depend on the selection of initial model. The genetic algorithm is a global search one, which is hardly lost in local maximums and has less dependence on initial values.Disaster and comprehensive evaluation of multiple objective...

Geophysical inversion problem can be considered as a nonlinear optimization problem. The objective function commonly used in solution evaluation is nonlinear and multiextreme. The inversion methods based on local linearization are usually lost in local maximum values,and they seriously depend on the selection of initial model. The genetic algorithm is a global search one, which is hardly lost in local maximums and has less dependence on initial values.Disaster and comprehensive evaluation of multiple objective functions are introduced into the genetic algorithm. We performed the simultaneous inversions of P,Swave velocities, and density of the layered elastic medium with horizontaI and curved interfaces. It has been proved that the genetic algorithm is very effective on geophysical inversion and quite noise resistant.

地球物理反问题是一个典型的非线性最优化问题,而常用于评价解估计的目标函数却是一个具有多极值的非线性问题。常规的局部线性化反演方法往往易于陷入局部极大值之中,且严重依赖于初始模型的选取。遗传算法则是一种全局性搜索方法,不易于陷入局部极大值之中,且对初始值依赖性不大,能较好地解决这一问题。本文在遗传算法中引入了多个目标函数的综合评价和灾变过程,对层状弹性介质(水平界面和弯曲界面)的纵、横波速度和密度进行了同时反演,证明遗传算法对于解决地球物理反问题是有效的,且具有较强的抗噪性。

With the aid of theory on wave propagation and Snell theorem, a theoretical study is presented on propagation characteristics of plane wave when it passes through layered elastic medium. Exact solution of dynamic equation is derived. The curves which represent the relations between transiting wave amplitude and medium parameters and incident angle are obtained by numerical computation. The results show that transiting wave amplitude is dependent on not only medium parameters but also interlining...

With the aid of theory on wave propagation and Snell theorem, a theoretical study is presented on propagation characteristics of plane wave when it passes through layered elastic medium. Exact solution of dynamic equation is derived. The curves which represent the relations between transiting wave amplitude and medium parameters and incident angle are obtained by numerical computation. The results show that transiting wave amplitude is dependent on not only medium parameters but also interlining thickness and incident angle.

运用波的传播理论及Snell定律研究了平面P波通过弹性层状介质时的传播特性 ,求得波动方程的解析解 ,在此基础上利用数值计算绘出了反射 透射系数与介质参数及入射角的关系曲线。结果表明透射系数不仅与介质参数有关 ,而且与夹层厚度和入射角有关 ,严格控制夹层厚度和入射角可获得满意的隔振效果 ,为屏障隔振理论在工程中的应用提供了理论基础

 
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