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Shear wave propagation in magneto poroelastic medium sandwiched between self-reinforced poroelastic medium and poroelastic half space
Engineering Computations ( IF 1.6 ) Pub Date : 2020-06-14 , DOI: 10.1108/ec-11-2019-0505
Sindhuja Ala , Rajitha Gurijala , Malla Reddy Perati

Purpose

The purpose of this paper is to investigate the effect of reinforcement, inhomogeneity and initial stress on the propagation of shear waves. The problem consists of magneto poroelastic medium sandwiched between self-reinforced medium and poroelastic half space. Using Biot’s theory of wave propagation, the frequency equation is obtained.

Design/methodology/approach

Shear wave propagation in magneto poroelastic medium embedded between a self-reinforced medium and poroelastic half space is investigated. This particular setup is quite possible in the Earth crust. All the three media are assumed to be inhomogeneous under initial stress. The significant effects of initial stress and inhomogeneity parameters of individual media have been studied.

Findings

Phase velocity is computed against wavenumber for various values of self-reinforcement, heterogeneity parameter and initial stress. Classical elasticity results are deduced as a particular case of the present study. Also in the absence of inhomogeneity and initial stress, frequency equation is discussed. Graphical representation is made to exhibit the results.

Originality/value

Shear wave propagation in magneto poroelastic medium embedded between a self-reinforced medium, and poroelastic half space are investigated in presence of initial stress, and inhomogeneity parameter. For heterogeneous poroelastic half space, the Whittaker’s solution is obtained. From the numerical results, it is observed that heterogeneity parameter, inhomogeneity parameter and reinforcement parameter have significant influences on the wave characteristics. In addition, frequency equation is discussed in absence of inhomogeneity and initial stress. For the validation purpose, numerical results are also computed for a particular case.



中文翻译:

剪切波在夹在自增强多孔弹性介质和多孔弹性半空间之间的磁多孔弹性介质中的传播

目的

本文的目的是研究钢筋,不均匀性和初始应力对剪切波传播的影响。问题在于夹在自增强介质和多孔弹性半空间之间的磁致多孔弹性介质。利用毕奥特的波传播理论,得到了频率方程。

设计/方法/方法

研究了在自增强介质与多孔弹性半空间之间嵌入的磁多孔弹性介质中的剪切波传播。这种特殊的设置在地壳中是完全可能的。假定所有三种介质在初始应力下都是不均匀的。研究了单个介质的初始应力和不均匀性参数的显着影响。

发现

针对自增强,非均质性参数和初始应力的各种值,针对波数计算相速度。古典弹性结果被推论为本研究的一个特殊情况。同样在没有不均匀性和初始应力的情况下,讨论了频率方程。进行图形表示以显示结果。

创意/价值

研究了在存在初始应力和不均匀性参数的情况下,在自增强介质与多孔弹性半空间之间嵌入的磁多孔弹性介质中的剪切波传播情况。对于异质多孔弹性半空间,获得了Whittaker解。从数值结果可以看出,非均质性参数,非均质性参数和加固参数对波浪特性有重要影响。另外,在不均匀和没有初始应力的情况下讨论了频率方程。为了进行验证,还会针对特定情况计算数值结果。

更新日期:2020-06-14
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