Partitioned solution strategies for coupled BEMFEM acoustic fluidstructure interaction problems
Two partitioned FEMBEM coupling formulations for acoustic FSI problems are proposed. They interconnect fluid and structure using classical (mortar) or localized Lagrange multipliers (LLM). A preconditioned and projected bi-conjugate gradient iterative solver is proposed for the solution. Mortar method is compared with LLM for acoustic FSI applications with non-matching interfaces. In highly nonconforming interface meshes, LLM presents a better accuracy than classical mortar.
fluidstructure interaction mortar localized lagrange multipliers domain decomposition feti beti