Altmetric

The importance of accurate time-integration in the numerical modelling of P-wave propagation

File Description SizeFormat 
1-s2.0-S0266352X17300241-main.pdfPublished version677.69 kBAdobe PDFView/Open
Title: The importance of accurate time-integration in the numerical modelling of P-wave propagation
Authors: Tsaparli, V
Kontoe, S
Taborda, D
Potts, D
Item Type: Journal Article
Abstract: The numerical dissipation characteristics of the Newmark and generalised-α time-integration schemes are investigated for P-wave propagation in a fully saturated level-ground sand deposit, where higher frequencies than those for S-waves are of concern. The study focuses on resonance, which has been shown to be of utmost importance for triggering liquefaction due to P-waves alone. The generalised-α scheme performs well, provided that the time-step has been carefully selected. Conversely, the dissipative Newmark method can excessively damp the response, changing radically the computed results. This implies that a computationally prohibiting small time-step would be required for Newmark to provide an accurate solution.
Issue Date: 1-Jun-2017
Date of Acceptance: 29-Jan-2017
URI: http://hdl.handle.net/10044/1/44261
DOI: https://dx.doi.org/10.1016/j.compgeo.2017.01.017
ISSN: 1873-7633
Publisher: Elsevier
Start Page: 203
End Page: 208
Journal / Book Title: Computers and Geotechnics
Volume: 86
Copyright Statement: © 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
Sponsor/Funder: Geotechnical Consulting Group
Engineering and Physical Sciences Research Council
Funder's Grant Number: GCG Chair
EPSRC grant number 1386368
Keywords: Geological & Geomatics Engineering
0905 Civil Engineering
0914 Resources Engineering And Extractive Metallurgy
0915 Interdisciplinary Engineering
Publication Status: Published
Open Access location: http://www.sciencedirect.com/science/article/pii/S0266352X17300241
Appears in Collections:Faculty of Engineering
Geotechnics



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commons