Mechanical behaviors of SLM additive manufactured octet-truss and truncated-octahedron lattice structures with uniform and taper beams

doi:10.1016/j.ijmecsci.2019.105091

IMECH-IR > 非线性力学国家重点实验室

	Mechanical behaviors of SLM additive manufactured octet-truss and truncated-octahedron lattice structures with uniform and taper beams
	Qi DX 1; Yu HB 1; Liu M 1; Huang H 2; Xu SC2 ; Xia Y2 ; Qian GA(钱桂安)3 ; Wu WW 1,4
通讯作者	Qian, Guian(qianguian@imech.ac.cn) ; Wu, Wenwang(wuww05@mit.edu)
发表期刊	INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
	2019-11-01
卷号	163 页码:16
ISSN	0020-7403
摘要	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.
关键词	Lattice structures Homogenization theory Mechanical properties SLM additive manufacturing
DOI	10.1016/j.ijmecsci.2019.105091
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000496866200001
关键词[WOS]	ASYMPTOTIC HOMOGENIZATION ; FINITE-ELEMENT ; COMPRESSION BEHAVIOR ; SANDWICH STRUCTURES ; ENERGY-ABSORPTION ; REENTRANT ; STIFFNESS ; METAMATERIALS ; DESIGN ; IMPACT
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
资助项目	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]
项目资助者	National Natural Science Foundation of China ; State Key Laboratory of Automotive Safety and Energy
论文分区	一类
力学所作者排名	1
RpAuthor	Qian, Guian ; Wu, Wenwang
引用统计	被引频次：94[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81199
专题	非线性力学国家重点实验室
作者单位	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
推荐引用方式 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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