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	Effects of high order deformations on the strength of planar lattice materials
	Wang, Bin ; Zhang, Yihui ; Fang, Daining
	2010-05-07 ; 2010-05-07 ; OCT
关键词	Planar lattice materials Kagome Mechanical properties Optimal design Engineering, Mechanical Mechanics
中文摘要	Lattice materials have been attractive over the last decade for use as load-carrying structures, energy absorbing elements and heat exchanging structures because of their excellent mechanical properties and multifunctional characters. However, the quantitative analysis accounting for high order deformations upon the collapse of lattice materials, which is important for their applications, has not been reported. An analytical investigation of yield surfaces with respect to the high order deformations was carried out for two typical planar lattice materials: triangular and Kagome lattices separately. The analytical results were validated by the finite element method (FEM) simulations. It was found that the effect of high order deformation on the yield strength increases with the relative density. The bending effect of the Kagome lattice is more obvious than that of the triangular one with the same relative density and stress state. The yield strength of the Kagome lattice calculated by neglecting the bending effect overestimates the result by more than 10% when the relative density is higher than about 11.1%, which may not be ignored in engineering applications. The yielding surfaces of the two lattice materials demonstrated in the paper also confirm the analytical results.
语种	英语 ; 英语
出版者	SPRINGER HEIDELBERG ; HEIDELBERG ; TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/15745]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Bin,Zhang, Yihui,Fang, Daining. Effects of high order deformations on the strength of planar lattice materials[J],2010, 2010, OCT.
APA	Wang, Bin,Zhang, Yihui,&Fang, Daining.(2010).Effects of high order deformations on the strength of planar lattice materials..
MLA	Wang, Bin,et al."Effects of high order deformations on the strength of planar lattice materials".(2010).

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