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- W3113306006 abstract "During design optimization, a smooth description of the geometry is important, especially for problems that are sensitive to the way interfaces are resolved, e.g., wave propagation or fluid-structure interaction. A levelset description of the boundary, when combined with an enriched finite element formulation, offers a smoother description of the design than traditional density-based methods. However, existing enriched methods have drawbacks, including ill-conditioning and difficulties in prescribing essential boundary conditions. In this work we introduce a new enriched topology optimization methodology that overcomes the aforementioned drawbacks; boundaries are resolved accurately by means of the Interface-enriched Generalized Finite Element Method (IGFEM), coupled to a levelset function constructed by radial basis functions. The enriched method used in this new approach to topology optimization has the same level of accuracy in the analysis as standard the finite element method with matching meshes, but without the need for remeshing. We derive the analytical sensitivities and we discuss the behavior of the optimization process in detail. We establish that IGFEM-based levelset topology optimization generates correct topologies for well-known compliance minimization problems." @default.
- W3113306006 created "2020-12-21" @default.
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- W3113306006 date "2020-12-04" @default.
- W3113306006 modified "2023-09-24" @default.
- W3113306006 title "An interface-enriched generalized finite element method for level set-based topology optimization" @default.
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- W3113306006 doi "https://doi.org/10.1007/s00158-020-02682-5" @default.
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