Effective compressive elastic behavior of rhombic dodecahedron structure with and without border constraints

doi:10.1016/j.compstruct.2020.113500

CORC > 金属研究所 > 中国科学院金属研究所

	Effective compressive elastic behavior of rhombic dodecahedron structure with and without border constraints
	Yu, Boning 1,2; Li, Yuming 1; Abbes, Boussad 1; Yu, Baoyi 2; Li, Shujun 3
刊名	COMPOSITE STRUCTURES
	2021-03-01
卷号	259 页码:14
关键词	Rhombic Dodecahedron Effective elastic modulus Additive fabrication Finite element Analytical model
ISSN号	0263-8223
DOI	10.1016/j.compstruct.2020.113500
通讯作者	Li, Yuming(yuming.li@univ-reims.fr)
英文摘要	The effective compressive elastic modulus of the cellular rhombic dodecahedron structure, with m x n cells in the X- and Y- directions in matrix, has been studied. The effective compressive elastic modulus of the structure without border constraint is a function of m and n; while for the structure with border constraints in the X- and Y- directions it is found unique that is independent of m and n, and is a function of the porosity of the structure. In order to study and understand the range of the effective compressive elastic modulus for the structure without border constraint with explicit expression of the structure parameters, an analytical model has been developed to evaluate the lower and upper bounds. The analytical model is also valid for the structure with double border constraints with a unique modulus. In addition, a finite element method based on beam theory in neglecting shearing effect has been developed for both cases, under the specific boundary conditions used in a unit cell, including finite and infinite numbers of cells m or/and n. As such, the analytical method based on beam theory takes into consideration the finite geometry dimensions and the fictive infinite geometry dimensions. The later gives the upper bound of the effective compressive elastic modulus. The modulus of the structure composed of finite numbers of cells m x n without border constraint is not only a function related to the porosity of the structure, but the geometrical parameters d and b. An experimental test has been fulfilled and compared to the theoretical one with reasonable agreement.
WOS研究方向	Mechanics ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000609381400005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/159059]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Yuming
作者单位	1.Univ Reims, Lab MATIM, Reims, France 2.Shenyang Univ Technol, Shenyang, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yu, Boning,Li, Yuming,Abbes, Boussad,et al. Effective compressive elastic behavior of rhombic dodecahedron structure with and without border constraints[J]. COMPOSITE STRUCTURES,2021,259:14.
APA	Yu, Boning,Li, Yuming,Abbes, Boussad,Yu, Baoyi,&Li, Shujun.(2021).Effective compressive elastic behavior of rhombic dodecahedron structure with and without border constraints.COMPOSITE STRUCTURES,259,14.
MLA	Yu, Boning,et al."Effective compressive elastic behavior of rhombic dodecahedron structure with and without border constraints".COMPOSITE STRUCTURES 259(2021):14.