← Back to Sessions

New Absorbing Boundary Condition for Elastic Waves in Isotropic Layered Waveguides

Session: Numerical Modeling of Earthquake Motion, Rupture Dynamics, Seismic Noise, Wave Propagation and Inverse Problems I

Type: Oral

Date: 4/23/2021

Presentation Time: 10:45 AM Pacific

Description: 

The wave-propagation phenomena in infinite media has described various physics in the fields of engineering and natural science. In order to obtain solutions to the problems, analytical or numerical methods have been developed. The energy radiation into infinity must be considered for accurate solutions to the problems. Various numerical or mechanical models or boundary conditions have been developed. In this study, proposed is a new boundary condition that can be applied to elastic-wave propagation problems in isotropic layered waveguides. A governing equation for elastic waves, which is obtained by applying the finite-element discretization in the vertical direction of a waveguide, is modified to derive a boundary condition for the infinite region of the waveguide. The accuracy and stability are demonstrated by applying the proposed boundary condition to wave-propagation problems in isotropic layered waveguides.

Presenting Author: Jin Ho Lee

Student Presenter: No

Authors