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Author Park, Sang Youn ♦ Lee, Jung Sub ♦ Choi, Byoung Ho ♦ Ahn, Il Hyuk ♦ Moon, Seung Ki
Source SpringerLink
Content type Text
Publisher Korean Society for Precision Engineering
File Format PDF
Copyright Year ©2015
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations
Subject Keyword Cellular structure ♦ Central voronoi tessellation ♦ Finite element analysis ♦ 3D printing ♦ Industrial and Production Engineering ♦ Materials Science
Abstract Numerous numerical models of mimicking cellular structures have been proposed, but, in many cases, those models were not able to describe the random cell geometry which is common for most cellular products. The concept of Voronoi tessellation has recently applied to construct the random characteristics of cell structures, but the structure generated by classical Voronoi tessellation method is too ideal by comparing with the actual cell structures. Moreover, the verification of physical and mechanical behaviors of random cell structures is scarcely researched due to the complexity of fabricating the cell structures which are numerically generated. In this study, Central Voronoi Tessellation (CVT) theory which considers the center of mass of each cell for further iteration of cell structure modification is adopted to generate realistic shape of cell structures. Some key parameters such as relative density, anisotropy, and number of iteration are considered. Mechanical behaviors of samples with numerically generated cell structures are investigated using elasto-plastic finite element analysis considering instability conditions. In addition, test samples in some cases considered in FEA are fabricated by aluminum alloy using 3-D printer based on the selective laser melting (SLM) technique, and the test results are compared with the numerical simulation results.
ISSN 22347593
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-11-07
Publisher Place Seoul
e-ISSN 20054602
Journal International Journal of Precision Engineering and Manufacturing
Volume Number 16
Issue Number 12
Page Count 7
Starting Page 2459
Ending Page 2465


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Source: SpringerLink