中文版 | English
Title

Concurrent topology optimization of parts and their supports for additive manufacturing with thermal deformation constraint

Author
Corresponding AuthorZhou,Mingdong
Publication Years
2023-12-01
DOI
Source Title
ISSN
0045-7949
EISSN
1879-2243
Volume289
Abstract
A typical manufacturing failure in powder bed additive manufacturing (AM) is caused by the collision between the already printed structure and the powder recoater due to large thermal deformation. This paper presents a density-based topology optimization (TO) approach to concurrently design parts and their supports that are not susceptible to such a manufacturing failure. The thermal deformation during the layer-by-layer AM process is predicted based on an inherent strain method, and the top surfaces' upward deformations are constrained below the powder layer thickness to avoid recoater collision. To increase the design freedom of TO, the parts and their supports are composed of lattice unit cells with different volume fractions, whose effective stiffness matrixes are predicted by the numerical homogenization and surrogate models. Besides, an overhang constraint and a two-field-based length scale control formulation are also utilized, ensuring overall manufacturability. With the proposed approach, lightweight structures with optimized mechanical properties and controllable manufacturing qualities can be obtained. Numerical examples are given to demonstrate the effectiveness of the proposed approach.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Others
Funding Project
National Key Research and Development Program of China[2021YFB1715400];National Natural Science Foundation of China[52075321];
WOS Research Area
Computer Science ; Engineering
WOS Subject
Computer Science, Interdisciplinary Applications ; Engineering, Civil
WOS Accession No
WOS:001072788300001
Publisher
ESI Research Field
COMPUTER SCIENCE
Scopus EID
2-s2.0-85170253742
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/559411
DepartmentSchool of System Design and Intelligent Manufacturing
Affiliation
1.Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China
2.School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen,518055,China
Recommended Citation
GB/T 7714
Liu,Yichang,Huang,Xiaoyu,Xiong,Yi,et al. Concurrent topology optimization of parts and their supports for additive manufacturing with thermal deformation constraint[J]. Computers and Structures,2023,289.
APA
Liu,Yichang,Huang,Xiaoyu,Xiong,Yi,Zhou,Mingdong,&Lin,Zhongqin.(2023).Concurrent topology optimization of parts and their supports for additive manufacturing with thermal deformation constraint.Computers and Structures,289.
MLA
Liu,Yichang,et al."Concurrent topology optimization of parts and their supports for additive manufacturing with thermal deformation constraint".Computers and Structures 289(2023).
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