| 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
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| Corresponding Author | Qian, Guian([email protected]) ; Wu, Wenwang([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
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| 2019-11-01 | |
| Volume | 163Pages:16 |
| ISSN | 0020-7403 |
| Abstract | In 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. |
| Keyword | Lattice structures Homogenization theory Mechanical properties SLM additive manufacturing |
| DOI | 10.1016/j.ijmecsci.2019.105091 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000496866200001 |
| WOS Keyword | ASYMPTOTIC HOMOGENIZATION ; FINITE-ELEMENT ; COMPRESSION BEHAVIOR ; SANDWICH STRUCTURES ; ENERGY-ABSORPTION ; REENTRANT ; STIFFNESS ; METAMATERIALS ; DESIGN ; IMPACT |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | National 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 Organization | National Natural Science Foundation of China ; State Key Laboratory of Automotive Safety and Energy |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Qian, Guian ; Wu, Wenwang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/81199 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.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.Rp_Au:Qian, Guian, Wu, Wenwang |
| 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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| File Name/Size | DocType | Version | Access | License | ||
| Jp2019491.pdf（8009KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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