A mechanically consistent model for fluid-structure interactions with contact including seepage

Abstract

We present a new approach for the mechanically consistent modelling and simulation of fluid-structure interactions with contact. The fundamental idea consists of combining a relaxed contact formulation with the modelling of seepage through a porous layer of co-dimension 1 during contact. For the latter, a Darcy model is considered in a thin porous layer attached to a solid boundary in the limit of infinitesimal thickness. In combination with a relaxation of the contact conditions the computational model is both mechanically consistent and simple to implement. We analyse the approach in detailed numerical studies with both thick- and thin-walled solids, within a fully Eulerian and an immersed approach for the fluid-structure interaction and using fitted and unfitted finite element discretisations.

References in corpus (1)

• Falling balls in a viscous fluid with contact: Comparing numerical simulations with experimental data

Cited by in corpus (2)

• An open-source computational framework for immersed fluid-structure interaction modeling using FEBio and MFEM
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