Symmetry-based decomposition for meshing quasi-axisymmetric components

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    Quasi-axisymmetric structural components are very common in any mechanical equipment containing rotating components, such as turbo machinery. Identifying and exploiting symmetric properties in these components is key to simplify the creation of FE volume meshes. In this paper, a novel approach is proposed to detect exact cyclic symmetries, in order to decompose a quasiaxisymmetric CAD component for FEA. Starting from a B-Rep CAD model, axisymmetric and cyclic repeated sectors are automatically identified to generate a subdivided representation, which can then be used to produce a good quality mesh. Using this new component structure, the resulting decomposition produces a reduced number of mesh-able sub-domains. Symmetry properties can then be inferred to generate the full component mesh from meshes on the individual sub-domains. The approach shows a major reduction of the geometry to be meshed leading to less manual intervention from the user.

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    • Symmetry-based decomposition for meshing quasi-axisymmetric components

      Rights statement: Copyright 2017 the authors. This is an open access article published under a Creative Commons Attribution-NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited.

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    DOI

    Original languageEnglish
    Pages (from-to)375-387
    JournalProcedia Engineering
    Journal publication date18 Oct 2017
    Volume203
    Early online date18 Oct 2017
    DOIs
    Publication statusEarly online date - 18 Oct 2017

    ID: 133109745