File(s) under permanent embargo
Parametric studies and manufacturability experiments on smooth self-supporting topologies
journal contribution
posted on 2020-01-02, 00:00 authored by Yun-Fei (Jack) Fu, Bernard RolfeBernard Rolfe, Louis Chiu, Yanan WangYanan Wang, Xiaodong Huang, Kazem GhabraieKazem GhabraieThis paper aims to explore the effects of optimisation parameters (the filter radius, mesh size, and target volume fraction) on the compliance and manufacturability of smooth self-supporting topologies for additive manufacturing (AM); and conduct manufacturability experiments of selected simulation results with the Selective Laser Melting (SLM) technology. In this study, smooth self-supporting topologies are obtained with a combined method of the Solid Isotropic Microstructure with Penalization method (SIMP) with the smooth boundary representation and Langelaar's AM filter. Numerical examples illustrate that a higher filter radius can lead to simpler smooth self-supporting topologies, but curved top corners that violate the critical overhang angle of 45° are inevitably generated. Additionally, the mesh size is found to be not as an important factor as the filter radius in affecting the manufacturability and performance. As a result of the self-supporting constraint, a small volume fraction can easily result in structural discontinuity. The experimental results demonstrate that the self-supporting topologies obtained are all printable in SLM.
History
Journal
Virtual and physical prototypingVolume
15Issue
1Pagination
22 - 34Publisher
Taylor & FrancisLocation
Abingdon, Eng.Publisher DOI
ISSN
1745-2759eISSN
1745-2767Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2019, Informa UK Limited, trading as Taylor & Francis GroupUsage metrics
Keywords
Science & TechnologyTechnologyEngineering, ManufacturingMaterials Science, MultidisciplinaryEngineeringMaterials ScienceAdditive manufacturingelemental volume fractionssmooth self-supporting designselective laser melting (SLM)solid isotropic microstructure with penalisation method (SIMP)EVOLUTIONARY STRUCTURAL OPTIMIZATIONCONTINUUM STRUCTURESOVERHANG CONSTRAINTSENSITIVITY-ANALYSISELEMENTFILTERSDESIGNMechanical Engineering
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC