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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/6471
Title: A fourth-order accurate finite-difference program for the simulation of SH-wave propagation in heterogeneous viscoelastic medium [Program kona?nih razlika ?etvrtog reda to?nosti za simulaciju rasprostiranja SH-vala u heterogenom viskoelasti?nom sredstvu]
Authors: Narayan J.P.
Kumar V.
Published in: Geofizika
Abstract: This article presents a staggered grid time-domain finite-difference (FD) program for the simulation of SH-wave propagation in a viscoelastic heterogeneous medium. The incorporation of realistic damping in FD program is based on a rheological model widely known as generalized Maxwell body (GM B-EK). The accuracy of implementation of realistic damping is validated by comparing the numerically computed frequency dependent quality factors and phase velocity with the same computed using GM B-EK rheological model and the Futterman's relationship. The accuracy was also validated by comparing the numerically computed soil amplification at resonance frequency for different damping with the analytical solutions. The stability and grid dispersion are also studied in details.
Citation: Geofizika (2013), 30(2): 173-189
URI: http://repository.iitr.ac.in/handle/123456789/6471
Issue Date: 2013
Publisher: Geofizicki Zavod
Keywords: And stability and grid dispersion
Finite difference program
Fourth order spatial accuracy
VGR-stress imaging technique
Viscoelastic SH-wave equations
ISSN: 3523659
Author Scopus IDs: 56240931000
57211183150
Author Affiliations: Narayan, J.P., Indian Institute of Technology Roorkee, Department of Earthquake Engineering, Roorkee, India
Kumar, V., Indian Institute of Technology Roorkee, Department of Earthquake Engineering, Roorkee, India
Corresponding Author: Narayan, J. P.; Department of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee-247667, India; email: jaypnfeq@iitr.ernet.in
Appears in Collections:Journal Publications [EQ]

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