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Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores

Ultralight sandwich constructions with corrugated channel cores (i.e., periodic fluid-through wavy passages) are envisioned to possess multifunctional attributes: simultaneous load-carrying and heat dissipation via active cooling. Titanium alloy (Ti-6Al-4V) corrugated-channel-cored sandwich panels (...

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Autores principales: Zhao, Zhenyu, Ren, Jianwei, Du, Shaofeng, Wang, Xin, Wei, Zihan, Zhang, Qiancheng, Zhou, Yilai, Yang, Zhikun, Lu, Tian Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865806/
https://www.ncbi.nlm.nih.gov/pubmed/33498941
http://dx.doi.org/10.3390/ma14030556
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author Zhao, Zhenyu
Ren, Jianwei
Du, Shaofeng
Wang, Xin
Wei, Zihan
Zhang, Qiancheng
Zhou, Yilai
Yang, Zhikun
Lu, Tian Jian
author_facet Zhao, Zhenyu
Ren, Jianwei
Du, Shaofeng
Wang, Xin
Wei, Zihan
Zhang, Qiancheng
Zhou, Yilai
Yang, Zhikun
Lu, Tian Jian
author_sort Zhao, Zhenyu
collection PubMed
description Ultralight sandwich constructions with corrugated channel cores (i.e., periodic fluid-through wavy passages) are envisioned to possess multifunctional attributes: simultaneous load-carrying and heat dissipation via active cooling. Titanium alloy (Ti-6Al-4V) corrugated-channel-cored sandwich panels (3CSPs) with thin face sheets and core webs were fabricated via the technique of selective laser melting (SLM) for enhanced shear resistance relative to other fabrication processes such as vacuum brazing. Four-point bending responses of as-fabricated 3CSP specimens, including bending resistance and initial collapse modes, were experimentally measured. The bending characteristics of the 3CSP structure were further explored using a combined approach of analytical modeling and numerical simulation based on the method of finite elements (FE). Both the analytical and numerical predictions were validated against experimental measurements. Collapse mechanism maps of the 3CSP structure were subsequently constructed using the analytical model, with four collapse modes considered (face-sheet yielding, face-sheet buckling, core yielding, and core buckling), which were used to evaluate how its structural geometry affects its collapse initiation mode.
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spelling pubmed-78658062021-02-07 Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores Zhao, Zhenyu Ren, Jianwei Du, Shaofeng Wang, Xin Wei, Zihan Zhang, Qiancheng Zhou, Yilai Yang, Zhikun Lu, Tian Jian Materials (Basel) Article Ultralight sandwich constructions with corrugated channel cores (i.e., periodic fluid-through wavy passages) are envisioned to possess multifunctional attributes: simultaneous load-carrying and heat dissipation via active cooling. Titanium alloy (Ti-6Al-4V) corrugated-channel-cored sandwich panels (3CSPs) with thin face sheets and core webs were fabricated via the technique of selective laser melting (SLM) for enhanced shear resistance relative to other fabrication processes such as vacuum brazing. Four-point bending responses of as-fabricated 3CSP specimens, including bending resistance and initial collapse modes, were experimentally measured. The bending characteristics of the 3CSP structure were further explored using a combined approach of analytical modeling and numerical simulation based on the method of finite elements (FE). Both the analytical and numerical predictions were validated against experimental measurements. Collapse mechanism maps of the 3CSP structure were subsequently constructed using the analytical model, with four collapse modes considered (face-sheet yielding, face-sheet buckling, core yielding, and core buckling), which were used to evaluate how its structural geometry affects its collapse initiation mode. MDPI 2021-01-24 /pmc/articles/PMC7865806/ /pubmed/33498941 http://dx.doi.org/10.3390/ma14030556 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhao, Zhenyu
Ren, Jianwei
Du, Shaofeng
Wang, Xin
Wei, Zihan
Zhang, Qiancheng
Zhou, Yilai
Yang, Zhikun
Lu, Tian Jian
Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores
title Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores
title_full Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores
title_fullStr Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores
title_full_unstemmed Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores
title_short Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores
title_sort bending response of 3d-printed titanium alloy sandwich panels with corrugated channel cores
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865806/
https://www.ncbi.nlm.nih.gov/pubmed/33498941
http://dx.doi.org/10.3390/ma14030556
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