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- W4296154490 abstract "We introduce a new paradigm for immersed finite element and isogeometric methods based on interpolating function spaces from an unfitted background mesh into Lagrange finite element spaces defined on a foreground mesh that captures the domain geometry but is otherwise subject to minimal constraints on element quality or connectivity. This is a generalization of the concept of Lagrange extraction from the isogeometric analysis literature and also related to certain variants of the finite cell and material point methods. Crucially, the interpolation may be approximate without sacrificing high-order convergence rates, which distinguishes the present method from existing finite cell, CutFEM, and immersogeometric approaches. The interpolation paradigm also permits non-invasive reuse of existing finite element software for immersed analysis. We analyze the properties of the interpolation-based immersed paradigm for a model problem and implement it on top of the open-source FEniCS finite element software, to apply it to a variety of problems in fluid, solid, and structural mechanics where we demonstrate high-order accuracy and applicability to practical geometries like trimmed spline patches." @default.
- W4296154490 created "2022-09-17" @default.
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- W4296154490 date "2022-09-14" @default.
- W4296154490 modified "2023-09-29" @default.
- W4296154490 title "Interpolation-based immersed finite element and isogeometric analysis" @default.
- W4296154490 doi "https://doi.org/10.48550/arxiv.2209.06892" @default.
- W4296154490 hasPublicationYear "2022" @default.
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