成果信息
Space-time topology optimization for additive manufacturing Concurrent optimization of structural layout and fabrication sequence
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文献类型:期刊论文
标题:Space-time topology optimization for additive manufacturing Concurrent optimization of structural layout and fabrication sequence
作者:Wang, Weiming[1];Munro, Dirk[2];Wang, Charlie C. L.[3];van Keulen, Fred[2];Wu, Jun[3]
机构:
[1]Delft Univ Technol, Dept Design Engn, Delft, Netherlands.;Dalian Univ Technol, Sch Math Sci, Dalian, Peoples R China.;
[2]Delft Univ Technol, Dept Precis & Microsyst Engn, Delft, Netherlands.;
[3]Delft Univ Technol, Dept Design Engn, Delft, Netherlands.;
通讯作者:Wu, J (reprint author), Delft Univ Technol, Dept Design Engn, Delft, Netherlands.
年:2020
期刊名称:STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION影响因子和分区
来源信息:年:2020  卷:61  期:1  页码范围:1-18  
卷:61
期:1
页码范围:1-18
增刊:正刊
学科:计算机科学;数学;综合交叉学科
收录情况:SCIE  EI(20194907796545)  
所属部门:数学科学学院
重要成果类型:重要期刊
语言:外文
ISSN:1615-147X
发表时间:2020-01-01
全文链接:DOI百度学术
人气指数:329
浏览次数:329
基金:LEaDing Fellows Programme at the Delft University of Technology from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [707404]; Natural Science Foundation of ChinaNational Natural Science Foundation of China [61702079, 61562062, U1811463]; Innovation Foundation of Science and Technology of Dalian [2018J11CY010]
关键词:Topology optimization; Additive manufacturing; Manufacturing process planning; Space-time optimization
摘要:The design of optimal structures and the planning of (additive manufacturing) fabrication sequences have been considered typically as two separate tasks that are performed consecutively. In the light of recent advances in robot-assisted (wire-arc) additive manufacturing which enable addition of material along curved surfaces, we present a novel topology optimization formulation which concurrently optimizes the structure and the fabrication sequence. For this, two sets of design variables, i.e., a density field for defining the structural layout, and a time field which determines the fabrication process order, are simultaneously optimized. These two fields allow to generate a sequence of intermediate structures, upon which manufacturing constraints (e.g., fabrication continuity and speed) are imposed. The proposed space-time formulation is general, and is demonstrated on three fabrication settings, considering self-weight of the intermediate structures, process-dependent critical loads, and time-dependent material properties.
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