Authors: Ursula M Mayer Alexander Popp Axel Gerstenberger Wolfgang A Wall
Publish Date: 2010/03/23
Volume: 46, Issue: 1, Pages: 53-67
Abstract
Finite deformation contact of flexible solids embedded in fluid flows occurs in a wide range of engineering scenarios We propose a novel threedimensional finite element approach in order to tackle this problem class The proposed method consists of a dual mortar contact formulation which is algorithmically integrated into an eXtended finite element method XFEM fluid–structure interaction approach The combined XFEM fluid–structurecontact interaction method FSCI allows to compute contact of arbitrarily moving and deforming structures embedded in an arbitrary flow field In this paper the fluid is described by instationary incompressible Navier–Stokes equations An exact fluid–structure interface representation permits to capture flow patterns around contacting structures very accurately as well as to simulate dry contact between structures No restrictions arise for the structural and the contact formulation We derive a linearized monolithic system of equations which contains the fluid formulation the structural formulation the contact formulation as well as the coupling conditions at the fluid–structure interface The linearized system may be solved either by partitioned or by monolithic fluid–structure coupling algorithms Two numerical examples are presented to illustrate the capability of the proposed fluid–structurecontact interaction approach
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