A Coupling Procedure of Finite Element and Scaled Boundary Finite Element Methods for Soil–Structure Interaction in the Time Domain

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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A coupling procedure of FE and SBFE for soil–structure interaction in the time domain

International Journal for Numerical Methods in Engineering ◽

10.1002/nme.923 ◽

2004 ◽

Vol 59 (11) ◽

pp. 1453-1471 ◽

Cited By ~ 42

Author(s):

Junyi Yann ◽

Chuhan Zhang ◽

Feng Jin

Keyword(s):

Time Domain ◽

Soil Structure ◽

Soil Structure Interaction ◽

Structure Interaction ◽

Coupling Procedure ◽

The Time Domain

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Finite element and Ritz vector techniques for the solution to three‐dimensional soil — structure interaction problems in the time domain

Engineering Computations ◽

10.1108/eb023584 ◽

1984 ◽

Vol 1 (4) ◽

pp. 298-311 ◽

Cited By ~ 7

Author(s):

E. Bayo ◽

E.L. Wilson

Keyword(s):

Finite Element ◽

Time Domain ◽

Soil Structure ◽

Three Dimensional ◽

Soil Structure Interaction ◽

Ritz Vector ◽

Structure Interaction ◽

The Time Domain

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An Efficient Mixed Finite Element Perfectly Matched Layer with Optimal Parameters Selection for Two-Dimensional Time Domain Soil-Structure Interaction Analysis

International Journal of Structural Stability and Dynamics ◽

10.1142/s0219455422500171 ◽

2021 ◽

Author(s):

Dong Van Nguyen ◽

Jaemin Kim

Keyword(s):

Finite Element ◽

Time Domain ◽

Soil Structure ◽

Perfectly Matched Layer ◽

Soil Structure Interaction ◽

Numerical Analyses ◽

Two Dimensional ◽

Infinite Domains ◽

Structure Interaction ◽

Parameters Selection

Perfectly matched layer (PML) is known as one of the best methods to simulate infinite domains in many fields such as soil-structure interaction (SSI). The performance of PML is significantly affected by PML parameters selection. However, the way to select PML parameters still remains unclear. This study proposes a method for PML parameters determination for elastic wave propagation in two-dimensional (2D) media. The scaling and attenuation functions are developed in order to increase the accuracy and effectiveness of the PML. The proposed scheme is applied for a mixed PML in time domain. The finite element method (FEM) formulations of the PML are presented so that it can be easily applied to the existing codes. ABAQUS, a popular FEM code, is used for numerical applications in this study. The proposed PML is imported into ABAQUS by using a user-defined element (UEL) written in Fortran language. Six numerical analyses of SSI are implemented to prove the efficiency of the proposed PML. The numerical analyses cover many realistic problems, including free field, surface structure, and embedded structure problems. The results demonstrate the efficiency of the proposed PML in terms of the accuracy and computational cost.

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