Mechanical properties of 3D printed architected polymer foams under large deformation

Jiang, Huan, Ziegler, Hannah, Zhang, Zhennan, Meng, Han, Chronopoulos, Dimitrios and Chen, Yanyu (2020) Mechanical properties of 3D printed architected polymer foams under large deformation. Materials & Design, 194. p. 108946. ISSN 0264-1275

[img]
Preview
Text
06222020_APF_Edits.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0.

Download (3MB) | Preview
[img]
Preview
Text
1-s2.0-S0264127520304809-main.pdf - Published Version
Available under License Creative Commons Attribution 4.0.

Download (6MB) | Preview
Official URL: https://doi.org/10.1016/j.matdes.2020.108946

Abstract

We report a new type of three-dimensional architected polymer foams composed of perforated spherical shells and flat strut connectors, which can be precisely produced by 3D printing techniques. We investigate the effects of foam architectures, manufacturing process, and constitutive material on the deformation patterns and failure modes of the proposed architected foams. We demonstrate that flat strut connectors offer unprecedented design flexibility for controlling the mechanical performance. By tuning the geometric parameter of flat strut connectors, the stiffness of architected foams can increase about one order of magnitude while the relative density increases only by 5%. Furthermore, the failure modes can be engineered from a catastrophic one to a progressive one by using weak flat strut connectors. Our experiments elucidate the salient roles of the layer-by-layer manufacturing process and constitutive polymer on the mechanical behavior of the proposed architected foams.

Item Type: Article
Uncontrolled Keywords: Large deformation, Strain rate, Printing direction, Architected material, 3D printing, Foam
Subjects: H100 General Engineering
H900 Others in Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 17 Aug 2020 14:34
Last Modified: 17 Aug 2020 14:45
URI: http://nrl.northumbria.ac.uk/id/eprint/44113

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics