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Smooth design of 3d self-supporting topologies using additive manufacturing filter and semdot

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journal contribution
posted on 2024-06-05, 11:03 authored by YF Fu, Kazem GhabraieKazem Ghabraie, Bernard RolfeBernard Rolfe, Yanan WangYanan Wang, LNS Chiu
The smooth design of self-supporting topologies has attracted great attention in the design for additive manufacturing (DfAM) field as it cannot only enhance the manufacturability of optimized designs but can obtain light-weight designs that satisfy specific performance requirements. This paper integrates Langelaar’s AM filter into the Smooth-Edged Material Distribution for Optimizing Topology (SEMDOT) algorithm—a new element-based topology optimization method capable of forming smooth boundaries—to obtain print-ready designs without introducing post-processing methods for smoothing boundaries before fabrication and adding extra support structures during fabrication. The effects of different build orientations and critical overhang angles on self-supporting topologies are demonstrated by solving several compliance minimization (stiffness maximization) problems. In addition, a typical compliant mechanism design problem—the force inverter design—is solved to further demonstrate the effectiveness of the combination between SEMDOT and Langelaar’s AM filter.

History

Journal

Applied Sciences (Switzerland)

Volume

11

Article number

ARTN 238

Pagination

1-17

Location

Basel, Switzerland

Open access

  • Yes

eISSN

2076-3417

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Issue

1

Publisher

MDPI