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	PLASTIC YIELD AND COLLAPSE MECHANISM OF PLANAR LATTICE STRUCTURES
	Zhang, Yihui ; Xue, Zhenyu ; Qiu, Xinming ; Fang, Daining
	2010-10-12 ; 2010-10-12
关键词	planar lattice structures plasticity yield surface structural collapse METAL SANDWICH PLATES CORES HONEYCOMB TOPOLOGY BEHAVIOR BRITTLE FOAMS MODEL Materials Science, Multidisciplinary Mechanics
中文摘要	Lattice structures possess a huge potential for energy absorbing applications, and the postinitial collapse region should be analyzed with respect to design principles in such cases. This paper presents an analytical method to calculate the ultimate yield surfaces of statically indeterminate planar lattice structures, based on the assessment of static equilibrium of the unit cell before and after initial yielding. The material of the unit cell wall is assumed to be elastic, perfectly plastic. Three statically indeterminate planar lattice structures: the diamond cross cell, the statically-indeterminate square cell (SI-square cell), the new Kagome cell (N-Kagome), are analyzed. The parametric studies reveal the roles of various geometrical parameters on the performance of each structure. The SI-square cell is utilized as an example to demonstrate the evolution of structural yielding, thus providing an insight into the collapse mode of lattice structures. Furthermore, the stress-strain relationships of the SI-square and N-Kagome cells are also calculated, and the effective constitutive relations of both lattices are found to be linearly hardening, which is validated by finite element (FE) simulations.
语种	英语 ; 英语
出版者	MATHEMATICAL SCIENCE PUBL ; BERKELEY ; UNIV CALIFORNIA, DEPT MATHEMATICS, BERKELEY, CA 94720-3840 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79105]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang, Yihui,Xue, Zhenyu,Qiu, Xinming,et al. PLASTIC YIELD AND COLLAPSE MECHANISM OF PLANAR LATTICE STRUCTURES[J],2010, 2010.
APA	Zhang, Yihui,Xue, Zhenyu,Qiu, Xinming,&Fang, Daining.(2010).PLASTIC YIELD AND COLLAPSE MECHANISM OF PLANAR LATTICE STRUCTURES..
MLA	Zhang, Yihui,et al."PLASTIC YIELD AND COLLAPSE MECHANISM OF PLANAR LATTICE STRUCTURES".(2010).

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