Co-simulation coupling spectral/finite elements for 3D soil/structure interaction problems - 13/04/18

Doi : 10.1016/j.crme.2018.02.001

Loïc Zuchowski ^a , Michael Brun ^a,^{^⁎} , Florent De Martin ^b
^a Université de Lyon, INSA-Lyon, SMS, 34, rue des Arts, 69621 Villeurbanne, France
^b BRGM (French Geological Survey), 3 avenue Claude-Guillemin, 45060 Orléans, France

^⁎Corresponding author.

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Abstract

The coupling between an implicit finite elements (FE) code and an explicit spectral elements (SE) code has been explored for solving the elastic wave propagation in the case of soil/structure interaction problem. The coupling approach is based on domain decomposition methods in transient dynamics. The spatial coupling at the interface is managed by a standard coupling mortar approach, whereas the time integration is dealt with an hybrid asynchronous time integrator. An external coupling software, handling the interface problem, has been set up in order to couple the FE software Code_Aster with the SE software EFISPEC3D.

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Keywords : Elastic wave, Domain decomposition, FEM/SEM co-simulation, Transient analysis, Hybrid Asynchronous Time Integrator, Soil/structure interaction