Development of a general‐purpose parallel finite element method for analyzing earthquake engineering problems

A parallel finite element method (FEM) based on high‐fidelity models for solving diverse earthquake engineering problems is presented. Its key feature is a parallel solver that is tuned to solve large‐scale wave equations. Tensorial material constitutive relations of concrete and soil and sophistica...

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Bibliographic Details
Published in:Earthquake engineering & structural dynamics 2021-12, Vol.50 (15), p.4180-4198
Main Authors: Motoyama, H., Sawada, M., Hotta, W., Haba, K., Otsuka, Y., Akiba, H., Hori, M.
Format: Article
Language:English
Subjects:
Accuracy
Constitutive relationships
Earthquake engineering
Earthquakes
Finite element analysis
Finite element method
high‐fidelity model
Liquefaction
Material properties
Mathematical models
nuclear power plant
parallel finite element method
parallel solver
Seismic activity
Seismic engineering
Seismic response
surface earthquake fault
Wave equations
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Summary:A parallel finite element method (FEM) based on high‐fidelity models for solving diverse earthquake engineering problems is presented. Its key feature is a parallel solver that is tuned to solve large‐scale wave equations. Tensorial material constitutive relations of concrete and soil and sophisticated nonlinear joint elements are implemented to broaden the applicability of the parallel FEM. The performance of the proposed parallel FEM is demonstrated for three examples; namely, seismic response, liquefaction, and surface earthquake fault analyses. A high‐fidelity model was constructed for each analysis, and the numerical results were validated against observed data. The performance of the proposed parallel FEM approach was evaluated in terms of the resolution of the simulated results. Ensemble computing based on approximately a hundred high‐fidelity models is useful for cases where there are considerable uncertainties regarding the material properties.
ISSN:0098-8847
1096-9845
DOI:10.1002/eqe.3551