Comparative Study Between Viscous Boundaries and Perfectly Matched Layer Boundaries
DOI:
https://doi.org/10.70567/mc.v41i9.47Keywords:
Perfectly matched layer (PML), Standard viscous boundaries, Soil-structure interactionAbstract
In the modeling of soil-structure interaction effects, it is important to adequately consider absorbing boundary conditions to simulate the infinite nature of the medium surrounding the structure. However, there are still deficiencies in absorbing boundaries when representing the radiation of outgoing waves, particularly when the analysis is performed in the time domain. ABAQUS and PLAXIS offer viscous absorbing boundaries, which are inadequate for absorbing waves that propagate at nonperpendicular angles to the boundary. This work compares the absorption performance of these absorbing boundaries with that of perfectly matched layers (PML). Using 2D finite elements, a rigid foundation subjected to different types of dynamic loads is modeled. The results of applying one type of absorbing boundary or the other are compared with reference solutions.
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