Imperial College London
Professor David Potts

Professor David Potts

Faculty of Engineering, Department of Civil and Environmental Engineering

Senior Research Investigator
 
 
 
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Contact

 

d.potts

 
 
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Location

 

505Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tsaparli:2017:10.1016/j.compgeo.2017.01.017,
author = {Tsaparli, V and Kontoe, S and Taborda, D and Potts, D},
doi = {10.1016/j.compgeo.2017.01.017},
journal = {Computers and Geotechnics},
pages = {203--208},
title = {The importance of accurate time-integration in the numerical modelling of P-wave propagation},
url = {http://dx.doi.org/10.1016/j.compgeo.2017.01.017},
volume = {86},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - 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.
AU  - Tsaparli,V
AU  - Kontoe,S
AU  - Taborda,D
AU  - Potts,D
DO  - 10.1016/j.compgeo.2017.01.017
EP  - 208
PY  - 2017///
SN  - 1873-7633
SP  - 203
TI  - The importance of accurate time-integration in the numerical modelling of P-wave propagation
T2  - Computers and Geotechnics
UR  - http://dx.doi.org/10.1016/j.compgeo.2017.01.017
UR  - http://hdl.handle.net/10044/1/44261
VL  - 86
ER  -
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