A Post-Processing Procedure for Level Set Based Topology Optimization

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Date

2017

Authors

Xian, Y.
Rosen, D.W.

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Publisher

University of Texas at Austin

Abstract

This paper addresses two issues: 1. Topology optimization yields designs that may require support structures if additively manufactured, which increase material and clean-up costs. 2. Topologically optimized designs consist of discretized geometry which makes subsequent engineering difficult, hence the increasing need to somehow render TO results to parameterized CAD models. This paper presents a procedure that, after a standard level set based topology optimization, firstly identifies certain regions on the part boundary that may require support materials or may cause staircase effect during 3D printing, then replaces these boundary segments with similar-shaped printable design features. Additionally, other boundary regions are fitted with simple geometric entities, so that the part boundary can be completely defined by geometric parameters of design primitives.

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