Fully scalable implementation of a volume coupling scheme for the modeling of multiscale materials

Abstract

We present in this paper a new implementation of a multi-scale, multi-model coupling algorithm, with a proposed parallelization scheme for the construction of the coupling terms between the models. This allows one to study such problems with a fully scalable algorithm on large computer clusters, even when the models and/or the coupling have a high number of degrees of freedom. As an application example, we will consider a system composed by an homogeneous, macroscopic elasto-plastic model and an anisotropic polycrystalline material model, with a volume coupling based on the Arlequin framework.

Broad-band 3-D earthquake simulation at nuclear site by an all-embracing source-to-structure approach

“…The computa- Considering the simulation of the structural response, a weak coupling solution was adopted, accounting for the standard engineering practice. Although neglected, the non-linear SSI can be integrated into the described work-flow by domain-reduction method [2], or by strong coupling schemes [52], either by refined strategies to compute time-convolution integrals arising on the interface when one (linear) subdomain is modelled by an impedance operator and the other exhibits non-linear behaviour [50]. However, from a structural design perspective (hazard and vulnerability), the modeling strategy fosters the investigation of seismic contexts characterized by poor observational databases, such as the low seismicity of metropolitan France, where numerous nuclear installations are present.…”