Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling
Additively manufactured lattice structures are finding wider applications as core materials because of their high specific strength, modulus, and energy absorption. Strut-reinforced Kagome (SRK) structures have been shown to have good compressive performance compared with many existing lattice struc...
Saved in:
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/161043 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-161043 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1610432022-08-12T06:23:07Z Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling Gautam, Rinoj Sridharan, Vijay Shankar Idapalapati, Sridhar School of Mechanical and Aerospace Engineering Rolls-Royce@NTU Corporate Lab Engineering::Materials Velocity Impact Response Lattice Structures Additively manufactured lattice structures are finding wider applications as core materials because of their high specific strength, modulus, and energy absorption. Strut-reinforced Kagome (SRK) structures have been shown to have good compressive performance compared with many existing lattice structures.Herein, the performance of acrylonitrile butadiene styrene (ABS) SRK lattice structures fabricated by fused deposition modeling under flatwise compression and local loading was investigated with and without polyurethane foam fillers. The SRK structure demonstrated abrupt failure at the joints in the vicinity of the face sheet, thereby reducing the energy absorption of the structure. The SRK filled with low-density polyurethane foam had no significant effect on peak failure load and moduli, whereas energy absorption per unit mass was higher by 16.5%.The SRK filled with high-density foam showed 116% increase in energy absorption. Similarly, a stronger indentation response was observed with high-density foam-filled SRK sandwich structures. Ministry of Education (MOE) Nanyang Technological University This work was funded by the Ministry of Education—Singapore (MoE) Academic Research Fund Tier 1 Grant # MOE RG173/15 administered through Nanyang Technological University, Singapore. IS thanks the School of Mechanical and Aerospace Engineering, NTU Singapore for the Research Incentive Grant. 2022-08-12T06:23:07Z 2022-08-12T06:23:07Z 2020 Journal Article Gautam, R., Sridharan, V. S. & Idapalapati, S. (2020). Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling. JOM, 72(3), 1324-1331. https://dx.doi.org/10.1007/s11837-019-03968-w 1047-4838 https://hdl.handle.net/10356/161043 10.1007/s11837-019-03968-w 2-s2.0-85077171043 3 72 1324 1331 en RG173/15 JOM © 2019 The Minerals, Metals & Materials Society. All rights reserved. |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
Engineering::Materials Velocity Impact Response Lattice Structures |
spellingShingle |
Engineering::Materials Velocity Impact Response Lattice Structures Gautam, Rinoj Sridharan, Vijay Shankar Idapalapati, Sridhar Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling |
description |
Additively manufactured lattice structures are finding wider applications as core materials because of their high specific strength, modulus, and energy absorption. Strut-reinforced Kagome (SRK) structures have been shown to have good compressive performance compared with many existing lattice structures.Herein, the performance of acrylonitrile butadiene styrene (ABS) SRK lattice structures fabricated by fused deposition modeling under flatwise compression and local loading was investigated with and without polyurethane foam fillers. The SRK structure demonstrated abrupt failure at the joints in the vicinity of the face sheet, thereby reducing the energy absorption of the structure. The SRK filled with low-density polyurethane foam had no significant effect on peak failure load and moduli, whereas energy absorption per unit mass was higher by 16.5%.The SRK filled with high-density foam showed 116% increase in energy absorption. Similarly, a stronger indentation response was observed with high-density foam-filled SRK sandwich structures. |
author2 |
School of Mechanical and Aerospace Engineering |
author_facet |
School of Mechanical and Aerospace Engineering Gautam, Rinoj Sridharan, Vijay Shankar Idapalapati, Sridhar |
format |
Article |
author |
Gautam, Rinoj Sridharan, Vijay Shankar Idapalapati, Sridhar |
author_sort |
Gautam, Rinoj |
title |
Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling |
title_short |
Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling |
title_full |
Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling |
title_fullStr |
Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling |
title_full_unstemmed |
Flatwise compression and local indentation response of 3D-printed strut-reinforced Kagome with polyurethane filling |
title_sort |
flatwise compression and local indentation response of 3d-printed strut-reinforced kagome with polyurethane filling |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/161043 |
_version_ |
1743119468670746624 |