A Streamline-Guided Dehomogenization Approach for Structural Design

Journal article (2023)

Authors

Junpeng Wang Technische Universität München
Rüdiger Westermann Technische Universität München
J. Wu Materials and Manufacturing - IDE
Research Group
Materials and Manufacturing (IDE) (TU Delft)
Copyright: © 2023 Junpeng Wang, Rüdiger Westermann, J. Wu
DOI
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https://doi.org/10.1115/1.4056148
Topology optimization Dehomogenization
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Published Date

2023

Language

English

Reuse Rights

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Faculty

Industrial Design Engineering

Department

Sustainable Design Engineering

Research Group

Materials and Manufacturing

Abstract

We present a novel dehomogenization approach for the efficient design of high-resolution load-bearing structures. The proposed approach builds upon a streamline-based parametrization of the design domain, using a set of space-filling and evenly spaced streamlines in the two mutually orthogonal direction fields that are obtained from homogenization-based topology optimization. Streamlines in these fields are converted into a graph, which is then used to construct a quad-dominant mesh whose edges follow the direction fields. In addition, the edge width is adjusted according to the density and anisotropy of the optimized orthotropic cells. In a number of numerical examples, we demonstrate the mechanical performance and regular appearance of the resulting structural designs and compare them with those from classic and contemporary approaches.