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An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling

Mokarram Hossain Orcid Logo, Zisheng Liao

Additive Manufacturing, Volume: 35, Start page: 101395

Swansea University Author: Mokarram Hossain Orcid Logo

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DOI (Published version): 10.1016/j.addma.2020.101395

Abstract

The additive manufacturing (AM) is a new paradigm across various disciplines of engineering sciences. Despite significant advances in the areas of hard material printings, the options for 3D printed soft materials are still limited. Most of the existing 3D printed polymers are in the areas of acryli...

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Published in: Additive Manufacturing
ISSN: 2214-8604
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54546
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first_indexed 2020-06-25T19:06:47Z
last_indexed 2020-08-17T03:16:06Z
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spelling 2020-08-16T14:30:39.0341399 v2 54546 2020-06-25 An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling 140f4aa5c5ec18ec173c8542a7fddafd 0000-0002-4616-1104 Mokarram Hossain Mokarram Hossain true false 2020-06-25 GENG The additive manufacturing (AM) is a new paradigm across various disciplines of engineering sciences. Despite significant advances in the areas of hard material printings, the options for 3D printed soft materials are still limited. Most of the existing 3D printed polymers are in the areas of acrylics and polyurethanes or their composites. Recently emerged Digital Light Synthesis (DLS) technology hugely accelerates the additive manufacturing of soft polymers. A DLS-inspired 3D printer uses a continuous building technique instead of a layer-by-layer approach, where the curing process is activated by an ultra-violet (UV) light. In this contribution, a DLS-based digitally printed silicone (SIL30) is experimentally characterized. To understand polymer's temperature-dependent mechanical responses, an extensive thermo-viscoelastic experimental characterisation at various strain rates under tensile deformation and temperature fields from -20° C to 60° C is performed. The study reveals significant effects of time-and temperature-dependency on the mechanical responses of the 3D printed silicone. Motivated by the thermo-mechanical results of the polymer, a thermodynamically consistent constitutive model at large strain is devised. Afterwards, the model is calibrated to the data that results in the identification of relevant parameters. The model predicts the experimental results with a good accuracy. 3D printed soft polymers are major candidates in designing complex and intricate architectured metamaterials for biomedical applications. Hence, a comprehensive thermo-mechanical experimental study and subsequent constitutive modelling will facilitate in designing and simulating more complex cellular metamaterials using 3D printed silicones. Journal Article Additive Manufacturing 35 101395 Elsevier BV 2214-8604 3D printing, Silicone polymer (SIL30), Digital light synthesis (DLS), Additive manufacturing, Thermo-viscoelastic modelling, Metamaterials 1 10 2020 2020-10-01 10.1016/j.addma.2020.101395 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2020-08-16T14:30:39.0341399 2020-06-25T13:25:37.4075234 Mokarram Hossain 0000-0002-4616-1104 1 Zisheng Liao 2 54546__17573__a27add35aa904e9fbdfdb8729d8d264f.pdf 54546.pdf 2020-06-25T13:27:27.3469376 Output 5960869 application/pdf Accepted Manuscript true 2021-06-25T00:00:00.0000000 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license true eng
title An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling
spellingShingle An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling
Mokarram Hossain
title_short An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling
title_full An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling
title_fullStr An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling
title_full_unstemmed An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling
title_sort An additively manufactured silicone polymer: Thermo-viscoelastic experimental study and computational modelling
author_id_str_mv 140f4aa5c5ec18ec173c8542a7fddafd
author_id_fullname_str_mv 140f4aa5c5ec18ec173c8542a7fddafd_***_Mokarram Hossain
author Mokarram Hossain
author2 Mokarram Hossain
Zisheng Liao
format Journal article
container_title Additive Manufacturing
container_volume 35
container_start_page 101395
publishDate 2020
institution Swansea University
issn 2214-8604
doi_str_mv 10.1016/j.addma.2020.101395
publisher Elsevier BV
document_store_str 1
active_str 0
description The additive manufacturing (AM) is a new paradigm across various disciplines of engineering sciences. Despite significant advances in the areas of hard material printings, the options for 3D printed soft materials are still limited. Most of the existing 3D printed polymers are in the areas of acrylics and polyurethanes or their composites. Recently emerged Digital Light Synthesis (DLS) technology hugely accelerates the additive manufacturing of soft polymers. A DLS-inspired 3D printer uses a continuous building technique instead of a layer-by-layer approach, where the curing process is activated by an ultra-violet (UV) light. In this contribution, a DLS-based digitally printed silicone (SIL30) is experimentally characterized. To understand polymer's temperature-dependent mechanical responses, an extensive thermo-viscoelastic experimental characterisation at various strain rates under tensile deformation and temperature fields from -20° C to 60° C is performed. The study reveals significant effects of time-and temperature-dependency on the mechanical responses of the 3D printed silicone. Motivated by the thermo-mechanical results of the polymer, a thermodynamically consistent constitutive model at large strain is devised. Afterwards, the model is calibrated to the data that results in the identification of relevant parameters. The model predicts the experimental results with a good accuracy. 3D printed soft polymers are major candidates in designing complex and intricate architectured metamaterials for biomedical applications. Hence, a comprehensive thermo-mechanical experimental study and subsequent constitutive modelling will facilitate in designing and simulating more complex cellular metamaterials using 3D printed silicones.
published_date 2020-10-01T04:08:09Z
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score 11.037603

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