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Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses

Shwe Soe, Rhosslyn Adams, Mokarram Hossain Orcid Logo, Peter Theobald

Additive Manufacturing, Volume: 39, Start page: 101885

Swansea University Author: Mokarram Hossain Orcid Logo

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DOI (Published version): 10.1016/j.addma.2021.101885

Abstract

This study evaluates a fluid-filled, closed-cell lattice as a novel route to reducing peak acceleration in impact environments. A conical structure was designed and built using fused filament fabrication. One structure was manufactured hollow (100% air), another 70% filled with water (50% by height)...

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Published in: Additive Manufacturing
ISSN: 2214-8604
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56188
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last_indexed 2021-03-05T04:21:16Z
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spelling 2021-03-04T13:02:44.2972608 v2 56188 2021-02-04 Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses 140f4aa5c5ec18ec173c8542a7fddafd 0000-0002-4616-1104 Mokarram Hossain Mokarram Hossain true false 2021-02-04 GENG This study evaluates a fluid-filled, closed-cell lattice as a novel route to reducing peak acceleration in impact environments. A conical structure was designed and built using fused filament fabrication. One structure was manufactured hollow (100% air), another 70% filled with water (50% by height) and a third 100% water-filled. Peak acceleration was evaluated by performing 4.1 kg impacts at 1, 2, 3 m/s. Impacts were then simulated in shell and solid finite element analysis models, employing the smooth particle hydrodynamic method for the water and a surface-based fluid-filled cavity method for air. The air-filled, conventional closed-cell structures achieved the lowest peak accelerations at lower impact energies, however, water infill improved impact performance at higher energies. For low to medium impact energies, shell and solid modelling accurately simulated experimental trends, although the latter is more computationally expensive. Solid modelling is the only viable solution for scenarios achieving structural densification, due to the inaccuracies in shell-based models caused by the inter-surface penetrations. This work has demonstrated that fluid-filled structures provide a promising approach to reduce acceleration and so achieving enhanced protection, whilst also presenting a computational pathway that will enable efficient design of new and novel structures. Journal Article Additive Manufacturing 39 101885 Elsevier BV 2214-8604 Fluid-filled structure; Additive manufacturing; Dynamic compression; Smooth particle hydrodynamic; Visco-hyperelastic constitutive model 1 3 2021 2021-03-01 10.1016/j.addma.2021.101885 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2021-03-04T13:02:44.2972608 2021-02-04T10:29:25.7087186 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering Shwe Soe 1 Rhosslyn Adams 2 Mokarram Hossain 0000-0002-4616-1104 3 Peter Theobald 4 56188__19258__35faa25ac53c4fc9a5b33420aad330c9.pdf 56188 (2).pdf 2021-02-10T09:09:05.7218822 Output 2858250 application/pdf Version of Record true © 2021 The Authors. This is an open access article under the CC BY license true eng http://creativecommons.org/licenses/by/4.0/
title Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses
spellingShingle Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses
Mokarram Hossain
title_short Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses
title_full Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses
title_fullStr Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses
title_full_unstemmed Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses
title_sort Investigating the dynamic compression response of elastomeric, additively manufactured fluid-filled structures via experimental and finite element analyses
author_id_str_mv 140f4aa5c5ec18ec173c8542a7fddafd
author_id_fullname_str_mv 140f4aa5c5ec18ec173c8542a7fddafd_***_Mokarram Hossain
author Mokarram Hossain
author2 Shwe Soe
Rhosslyn Adams
Mokarram Hossain
Peter Theobald
format Journal article
container_title Additive Manufacturing
container_volume 39
container_start_page 101885
publishDate 2021
institution Swansea University
issn 2214-8604
doi_str_mv 10.1016/j.addma.2021.101885
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering
document_store_str 1
active_str 0
description This study evaluates a fluid-filled, closed-cell lattice as a novel route to reducing peak acceleration in impact environments. A conical structure was designed and built using fused filament fabrication. One structure was manufactured hollow (100% air), another 70% filled with water (50% by height) and a third 100% water-filled. Peak acceleration was evaluated by performing 4.1 kg impacts at 1, 2, 3 m/s. Impacts were then simulated in shell and solid finite element analysis models, employing the smooth particle hydrodynamic method for the water and a surface-based fluid-filled cavity method for air. The air-filled, conventional closed-cell structures achieved the lowest peak accelerations at lower impact energies, however, water infill improved impact performance at higher energies. For low to medium impact energies, shell and solid modelling accurately simulated experimental trends, although the latter is more computationally expensive. Solid modelling is the only viable solution for scenarios achieving structural densification, due to the inaccuracies in shell-based models caused by the inter-surface penetrations. This work has demonstrated that fluid-filled structures provide a promising approach to reduce acceleration and so achieving enhanced protection, whilst also presenting a computational pathway that will enable efficient design of new and novel structures.
published_date 2021-03-01T04:10:58Z
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score 11.012924

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