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2018 | OriginalPaper | Chapter

Development of Scalable Three-Dimensional Elasto-Plastic Nonlinear Wave Propagation Analysis Method for Earthquake Damage Estimation of Soft Grounds

Authors : Atsushi Yoshiyuki, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Wijerathne

Published in: Computational Science – ICCS 2018

Publisher: Springer International Publishing

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Abstract

In soft complex grounds, earthquakes cause damages with large deformation such as landslides and subsidence. Use of elasto-plastic models as the constitutive equation of soils is suitable for evaluation of nonlinear wave propagation with large ground deformation. However, there is no example of elasto-plastic nonlinear wave propagation analysis method capable of simulating a large-scale soil deformation problem. In this study, we developed a scalable elasto-plastic nonlinear wave propagation analysis program based on three-dimensional nonlinear finite-element method. The program attains 86.2% strong scaling efficiency from 240 CPU cores to 3840 CPU cores of PRIMEHPC FX10 based Oakleaf-FX [1], with 8.85 TFLOPS (15.6% of peak) performance on 3840 CPU cores. We verified the elasto-plastic nonlinear wave propagation program through convergence analysis, and conducted an analysis with large deformation for an actual soft ground modeled using 47,813,250 degrees-of-freedom.

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next chapter A New Matrix-Free Approach for Large-Scale Geodynamic Simulations and its Performance
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Metadata
Title
Development of Scalable Three-Dimensional Elasto-Plastic Nonlinear Wave Propagation Analysis Method for Earthquake Damage Estimation of Soft Grounds
Authors
Atsushi Yoshiyuki
Kohei Fujita
Tsuyoshi Ichimura
Muneo Hori
Lalith Wijerathne
Copyright Year
2018
Book
Computational Science – ICCS 2018

Print ISBN: 978-3-319-93700-7

Electronic ISBN: 978-3-319-93701-4

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-3-319-93701-4_1

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