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Mechanical behaviors of SLM additive manufactured octet-truss and truncated-octahedron lattice structures with uniform and taper beams
Qi DX1; Yu HB1; Liu M1; Huang H2; Xu SC2; Xia Y2; Qian GA(钱桂安)3; Wu WW1,4
Corresponding AuthorQian, Guian(qianguian@imech.ac.cn) ; Wu, Wenwang(wuww05@mit.edu)
Source PublicationINTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
2019-11-01
Volume163Pages:16
ISSN0020-7403
AbstractIn this paper, three-dimensional lattice structures composed of octet-truss and truncated-octahedron unit cells with regular and tapered beams are proposed, and their mechanical properties are investigated through experiments and simulation comparisons. Firstly, analytical closed form expressions of the relative density functions are derived for different lattice structures. Secondly, in-situ compression samples are fabricated via Selective Laser Melting (SLM) 3D printing technique, monotonic compression experiments are performed for studying the effects of tapered beams on the mechanical properties of lattice structures with ordinary uniform beams, and SEM characterizations of fracture surface morphology are performed for understanding the underlying failure mechanisms. Afterwards, asymptotic homogenization (AH) method is used for evaluating the anisotropy properties of these lattice structures, closed form expression of the mechanical behaviors of unit cells is derived and solved with ABAQUS (R) using surface traction method. Asymptotic homogenization analysis shows that node enforcement can significantly enhance the modulus and reduce the anisotropy of the lattice.
KeywordLattice structures Homogenization theory Mechanical properties SLM additive manufacturing
DOI10.1016/j.ijmecsci.2019.105091
Indexed BySCI ; EI
Language英语
WOS IDWOS:000496866200001
WOS KeywordASYMPTOTIC HOMOGENIZATION ; FINITE-ELEMENT ; COMPRESSION BEHAVIOR ; SANDWICH STRUCTURES ; ENERGY-ABSORPTION ; REENTRANT ; STIFFNESS ; METAMATERIALS ; DESIGN ; IMPACT
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding ProjectNational Natural Science Foundation of China[11702023] ; National Natural Science Foundation of China[11632010] ; National Natural Science Foundation of China[11972081] ; State Key Laboratory of Automotive Safety and Energy[KF1808] ; State Key Laboratory of Automotive Safety and Energy[KF1810]
Funding OrganizationNational Natural Science Foundation of China ; State Key Laboratory of Automotive Safety and Energy
Classification一类
Ranking1
ContributorQian, Guian ; Wu, Wenwang
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81199
Collection非线性力学国家重点实验室
Affiliation1.Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China;
2.Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China;
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
4.MIT, Dept Mech Engn, Cambridge, MA 02139 USA
Recommended Citation
GB/T 7714
Qi DX,Yu HB,Liu M,et al. Mechanical behaviors of SLM additive manufactured octet-truss and truncated-octahedron lattice structures with uniform and taper beams[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2019,163:16.
APA Qi DX.,Yu HB.,Liu M.,Huang H.,Xu SC.,...&Wu WW.(2019).Mechanical behaviors of SLM additive manufactured octet-truss and truncated-octahedron lattice structures with uniform and taper beams.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,163,16.
MLA Qi DX,et al."Mechanical behaviors of SLM additive manufactured octet-truss and truncated-octahedron lattice structures with uniform and taper beams".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 163(2019):16.
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