A fluid-structure interaction technique for the simulation of inflatablestructures is introduced. The presented finite-element/boundary-element (FEBE)technique couples an isogeometric finite element discretization of a flexibleshell structure with an isogeometric boundary element discretization of aStokes fluid. This technique was introduced in [Comput. Mech., 2012,50(6):779-788] for planar problems and extended to 3D in [Comput. Methods Appl.Mech. Engrg., 2014, 284:637-663]. One of the marked advantages of this approachis the contact mechanism, lubrication, which is an inherent attribute of theflow model. Its role in preventing contact was theoretically substantiated, butonly demonstrated in the planar setting. In the present work, we demonstratethe effectiveness of the contact mechanism in the isogeometric andthree-dimensional setting, discussing various aspects pertaining to theaccurate resolution of the traction responsible for contact prevention.
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