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• W2944933818 abstract "We present a consistent approach that allows to solve challenging general nonlinear fluid-structure-contact interaction (FSCI) problems. The underlying continuous formulation includes both fluid-structure interaction as well as frictionless contact between multiple elastic bodies. The respective interface conditions in normal and tangential orientation and especially the role of the fluid stress within the region of closed contact are discussed for the general problem of FSCI. To ensure continuity of the tangential constraints from no-slip to frictionless contact, a transition is enabled by using the general Navier condition with varying slip length. Moreover, the fluid stress in the contact zone is obtained by an extension approach as it plays a crucial role for the lift-off behavior of contacting bodies. With the given continuity of the spatially continuous formulation, continuity of the discrete problem (which is essential for the convergence of Newton's method) is reached naturally. As topological changes of the fluid domain are an inherent challenge in FSCI configurations, a non-interface fitted Cut Finite Element Method (CutFEM) is applied to discretize the fluid domain. All interface conditions, that is the `no-slip' FSI, the general Navier condition, and frictionless contact are incorporated using Nitsche based methods, thus retaining the continuity and consistency of the model. To account for the strong interaction between the fluid and solid discretization, the overall coupled discrete system is solved monolithically. Numerical examples of varying complexity are presented to corroborate the developments." @default.
• W2944933818 created "2019-05-29" @default.
• W2944933818 creator A5014255282 @default.
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• W2944933818 date "2019-05-23" @default.
• W2944933818 modified "2023-09-27" @default.
• W2944933818 title "A consistent and comprehensive computational approach for general Fluid-Structure-Contact Interaction problems" @default.
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• W2944933818 hasPublicationYear "2019" @default.
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