A time-domain approach for the simulation of three-dimensional seismic wave propagation using the scaled boundary finite element method

2022 ◽  
Vol 152 ◽  
pp. 107011
Author(s):  
Yanling Qu ◽  
Junqi Zhang ◽  
Sascha Eisenträger ◽  
Chongmin Song
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wave Propagation ◽  
Seismic Wave ◽  
Time Domain ◽  
Three Dimensional ◽  
Seismic Wave Propagation ◽  
Scaled Boundary Finite Element ◽  
Element Method

Complex topography and media implementation using hp-adaptive DG-FEM for seismic wave modeling

2020 ◽  
Author(s):  
Yang Xu ◽  
Xiaofei Chen ◽  
Dechao Han ◽  
Wei Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wave Propagation ◽  
Seismic Wave ◽  
Seismic Wave Propagation ◽  
Seismic Inversion ◽  
Complex Topography ◽  
Propagation Law ◽  
The Impact ◽  
Element Method

<p>Numerical simulation of seismic wavefield is helpful to understand the propagation law of seismic wave in complex media. In addition, accurate simulation of seismic wave propagation is of great importance for seismic inversion. The discontinuous Galerkin finite element method(DG-FEM) combines the advantages of finite element method(FEM) and finite volume method(FVM) to effectively simulate the propagation characteristics of seismic waves in complex medium.</p><p>In this study, we use the hp-adaptive DG -FEM to perform accurate simulation of seismic wave propagation in complex topography and medium, and compare the results with the analytical solution of the Generalized Reflection/Transmission(GRT) coefficient method. Furthermore, ADE CFS-PML is modified and applied to DG-FEM, which greatly reduces the impact of artificial boundaries.</p>

Tunnel Seismic Wave Field Simulation Using Finite Element Method

2011 ◽  
Vol 121-126 ◽  
pp. 4880-4884
Author(s):  
Zhao Ling Wang ◽  
Zheng Ping Liu ◽  
Chi Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wave Propagation ◽  
Wave Field ◽  
Fault Zone ◽  
Seismic Wave ◽  
Seismic Wave Propagation ◽  
Tunnel Model ◽  
Seismic Wave Field ◽  
Element Method

In the paper, two-dimensional Tunnel seismic Wave field is Simulated with finite element method, and the in the tunnel model with fault zone load Ricker wavelet source on the workface, compared the case of wave propagation according to wave field snapshot and time record, can intuitively, accurately reflect the characteristics of seismic wave propagation in tunnel seismic prediction with geological disasters such as the fault zone and so on.

scholarly journals Dynamic Analysis of Partially Embedded Structures Considering Soil-Structure Interaction in Time Domain

2011 ◽  
Vol 2011 ◽  
pp. 1-23 ◽  
Author(s):  
Sanaz Mahmoudpour ◽  
Reza Attarnejad ◽  
Cambyse Behnia
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Time Domain ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Structure System ◽  
Structure Interaction ◽  
Scaled Boundary Finite Element ◽  
Element Method

Analysis and design of structures subjected to arbitrary dynamic loadings especially earthquakes have been studied during past decades. In practice, the effects of soil-structure interaction on the dynamic response of structures are usually neglected. In this study, the effect of soil-structure interaction on the dynamic response of structures has been examined. The substructure method using dynamic stiffness of soil is used to analyze soil-structure system. A coupled model based on finite element method and scaled boundary finite element method is applied. Finite element method is used to analyze the structure, and scaled boundary finite element method is applied in the analysis of unbounded soil region. Due to analytical solution in the radial direction, the radiation condition is satisfied exactly. The material behavior of soil and structure is assumed to be linear. The soil region is considered as a homogeneous half-space. The analysis is performed in time domain. A computer program is prepared to analyze the soil-structure system. Comparing the results with those in literature shows the exactness and competency of the proposed method.

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