Investigating infill density and pattern effects in additive manufacturing by characterizing metamaterials along the strain-gradient theory

被引：26

作者：

Aydin, Gokhan ^{[1
]}

Sarar, B. Cagri ^{[2
]}

Yildizdag, M. Erden ^{[1
,2
]}

Abali, B. Emek ^{[3
]}

机构：

[1] Istanbul Tech Univ, Fac Naval Architecture & Ocean Engn, Istanbul, Turkey

[2] Univ Aquila, Int Res Ctr Math & Mech Complex Syst, Laquila, Italy

[3] Uppsala Univ, Dept Mat Sci & Engn, Div Appl Mech, S-75103 Uppsala, Sweden

来源：

MATHEMATICS AND MECHANICS OF SOLIDS | 2022年 / 27卷 / 10期

关键词：

Strain-gradient theory; homogenization; additive manufacturing; infill density; infill pattern; metamaterials; PANTOGRAPHIC SHEETS; CONTINUUM MODEL; DISCRETE; DESIGN; DEFORMATIONS; MECHANICS;

D O I：

10.1177/10812865221100978

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Infill density used in additive manufacturing incorporates a structural response change in the structure. Infill pattern creates a microstructure that affects the mechanical performance as well. Whenever the length ratio of microstructure to geometry converges to one, metamaterials emerge and the strain-gradient theory is an adequate model to predict metamaterials response. All metamaterial parameters are determined by an asymptotic homogenization, and we investigate the effects of infill density and pattern on these parameters. In order to illuminate the role of infill characteristics on the strain-gradient parameters, an in-depth numerical investigation is presented for one, widely used case in three-dimensional (3D) printers, rectangular grid.

引用

页码：2002 / 2016

页数：15

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