Document Type

Article

Edition

Special Issue—Additive Manufacturing: Topology Optimization and Cellular Microstructures

Editor

Georgios E Stavroulakis

Loucas Papadakis

Ioannis Ntintakis

Publication Title

Applied Sciences

Publisher

MDPI

Rights and Access Note

ⓒ The Authors, 2022

Publication Date

2-19-2022

First Page

2180

Issue Number

4

Volume Number

12

Abstract/ Summary

A numerical homogenization approach is presented for the effective elastic moduli of 3D printed cellular infills. A representative volume element of the infill geometry is discretized using either shell or solid elements and analyzed using the finite element method. The elastic moduli of the bulk cellular material are obtained through longitudinal and shear deformations of a representative volume element under periodic boundary conditions. The method is used to analyze the elastic behavior of gyroid infills for varying infill densities. The approach is validated by comparing the Young’s modulus and Poisson’s ratio with those obtained from compression experiments. Results indicate that although the gyroid infill exhibits cubic symmetry, it is nearly isotropic with a low anisotropy index. The numerical predictions are used to develop semi-empirical equations of the effective elastic moduli of gyroid infills as a function of infill density in order to inform design and topology optimization workflows.

Citation/Publisher Attribution

Bean P, Lopez-Anido RA, Vel S. Numerical Modeling and Experimental Investigation of Effective Elastic Properties of the 3D Printed Gyroid Infill. Applied Sciences. 2022; 12(4):2180. https://doi.org/10.3390/app12042180

DOI

https://doi.org/10.3390/app12042180

Version

publisher's version of the published document

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Rights Statement

In Copyright