SH-wave in a multilayered orthotropic crust under initial stress: A finite difference approach

Gupta, Shishir; Smita,; Pramanik, Snehamoy

doi:10.1080/23311835.2017.1284294

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…In the use of Finite Element Method (FEM), Day (1977) were able to present the responses of isotropic topographic features, and Virieux (1984) and Moczo (1989) conducted their works by the Finite Difference Method (FDM). Moreover, Bagault et al (2012), Guler et al (2017) and Gupta et al (2017) prepared their anisotropic as well as orthotropic models using FEM/FDM. The boundary technique mostly known as the Boundary Element Method (BEM) are formulated in two types of the full-space and half-space (Dominguez & Meise, 1991) In this field, the isotropic investigations are presented by Ohtsu & Uesugi (1985), Ding & Dravinski (1996), Mogi & Kawakami (2007), Kamalian et al (2008), Ba et al (2017).…”

Section: Literature Surveymentioning

confidence: 99%

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

Mojtabazadeh-Hasanlouei

Panji

Kamalian

2023

Preprint

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A simple numeric model named DASBEM was successfully developed to analyze the seismic heterogeneous orthotropic hill-shaped topographies by a time-domain boundary element method based on half-space Green’s functions. The model was elaborated only by discretizing the hill surface and its interface with the underlying half-space in the use of image source theory and substructure approach. To improve the model at the corners, the double node procedure was applied to extreme nodes of the used quadratic elements. An attenuation ratio is implemented in the boundary equations using a decremental exponential function. After presenting the technique, a validation example presented beside the literature to measure the convergence with an isotropic response. Then, a sample Gaussian–shaped hill model is prepared under propagating obliquely incident SH-waves as common sample topography and the surface response is obtained by considering some significant parameters as well as the shape ratio, isotropy factor, frequency content, and angle of the incident wave. The ground surface response is sensitized in two time and frequency realms. The results showed that the amplitude of the response was not only dependent on the impedance ratio but also the isotropy ratio was always effective in orienting the wavefront to amplify the ground movement.

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Section: Literature Surveymentioning

confidence: 99%

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

Mojtabazadeh-Hasanlouei

Panji

Kamalian

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…and utilized hybrid approaches for 3D simulation of seismic wave propagation. Moreover, Bagault et al (2012), Guler et al (2017) and Gupta et al (2017) prepared their anisotropic as well as orthotropic models using FEM/FDM.…”

Section: Literature Reviewmentioning

confidence: 99%

A Simple TD-BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies

Mojtabazadeh-Hasanlouei,

Panji,

Kamalian

2023

Preprint

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A simple numerical model named DASBEM was successfully developed to analyze the seismic heterogeneous orthotropic hill-shaped topographies by a time-domain boundary element method (TD-BEM) based on half-space Green’s functions. The model was elaborated only by discretizing the hill surface and its interface with the underlying half-space in the use of image source theorem and substructure approach. To improve the model at the corners, the double node procedure was applied to extreme nodes of the used quadratic elements. An attenuation ratio is implemented in the boundary equations using a decremental exponential function. After presenting the technique, a validation example presented beside the literature to measure the convergence with an isotropic response. Then, a sample Gaussian–shaped hill model is prepared under propagating obliquely incident SH-waves as common sample topography and the surface response is obtained by considering some significant parameters as well as the shape ratio, isotropy factor, frequency content, and angle of the incident wave. The ground surface response is sensitized in two time and frequency domains. The results showed that the amplitude of the response was not only dependent on the impedance ratio, but also the isotropy ratio was always effective in orienting the wavefront to amplify the ground movement.

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Finite difference modeling of shear wave propagation in multilayered fractured porous structures

2021

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SH-wave in a multilayered orthotropic crust under initial stress: A finite difference approach

Cited by 6 publications

References 14 publications

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

A Simple TD-BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies

Finite difference modeling of shear wave propagation in multilayered fractured porous structures

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