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Removing low-frequency artefacts from topology-optimized surfaces

Elder, Salvatore, William Quadros

Research Note, 25th International Meshing Roundtable, Sandia National Laboratories, September 26-30 2016

INTERNATIONAL
MESHING
ROUNTABLE

25th International Meshing Roundtable
Washington DC, U.S.A.
September 26-30, 2016

Salvatore Elder, School of Applied & Engineering Physics / Cornell University, US, sse34@cornell.edu
William Quadros, Sandia National Laboratories, US, wrquadr@sandia.gov

Research Note Abstract
Topology optimization is an emerging technology capable of producing organic shapes subject to various physical objectives. One of the undesirable features present in the resulting triangle meshes is low-frequency surface rippling. Here we propose a method in which the ripple frequencies are estimated based on geometric mesh characteristics. The ripples can then be removed by direct projection to and from an orthogonal frequency basis derived from the discrete Laplace-Beltrami operator.

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