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Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials

Thermal stress impacts various engineering fields significantly, such as aerospace and precision instruments. This adverse effect can be greatly reduced, if not eliminated, by the application of micro-thermal expansion materials, and bi-material beams are widely utilized in the design of micro-therm...

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Detalles Bibliográficos
Autores principales: Huang, Jingxiang, Fu, Minghui, Zheng, Binbin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9273641/
https://www.ncbi.nlm.nih.gov/pubmed/35817889
http://dx.doi.org/10.1038/s41598-022-16036-2
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author Huang, Jingxiang
Fu, Minghui
Zheng, Binbin
author_facet Huang, Jingxiang
Fu, Minghui
Zheng, Binbin
author_sort Huang, Jingxiang
collection PubMed
description Thermal stress impacts various engineering fields significantly, such as aerospace and precision instruments. This adverse effect can be greatly reduced, if not eliminated, by the application of micro-thermal expansion materials, and bi-material beams are widely utilized in the design of micro-thermal expansion structures, thereby exhibiting great application potentials. The elasticity solution of bi-material curved beam under free thermal expansion has been proposed by scholars. Based on this solution, the simplified form is proposed in this paper, and extended to the case where the rotation angles at both ends of the circular arc are constrained under thermal loads. Besides, the geometric parameters and the nonlinear problems of the thermal expansion of bi-material curved beam are analyzed. In addition, a novel type of negative thermal expansion material has been designed by applying the bi-material curved beam to the tetra chiral and anti-tetra chiral materials. The proposed material has greater negative thermal expansion effect than the traditional tetra and anti-tetra chiral materials that are with straight beams.
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spelling pubmed-92736412022-07-13 Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials Huang, Jingxiang Fu, Minghui Zheng, Binbin Sci Rep Article Thermal stress impacts various engineering fields significantly, such as aerospace and precision instruments. This adverse effect can be greatly reduced, if not eliminated, by the application of micro-thermal expansion materials, and bi-material beams are widely utilized in the design of micro-thermal expansion structures, thereby exhibiting great application potentials. The elasticity solution of bi-material curved beam under free thermal expansion has been proposed by scholars. Based on this solution, the simplified form is proposed in this paper, and extended to the case where the rotation angles at both ends of the circular arc are constrained under thermal loads. Besides, the geometric parameters and the nonlinear problems of the thermal expansion of bi-material curved beam are analyzed. In addition, a novel type of negative thermal expansion material has been designed by applying the bi-material curved beam to the tetra chiral and anti-tetra chiral materials. The proposed material has greater negative thermal expansion effect than the traditional tetra and anti-tetra chiral materials that are with straight beams. Nature Publishing Group UK 2022-07-11 /pmc/articles/PMC9273641/ /pubmed/35817889 http://dx.doi.org/10.1038/s41598-022-16036-2 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Huang, Jingxiang
Fu, Minghui
Zheng, Binbin
Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials
title Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials
title_full Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials
title_fullStr Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials
title_full_unstemmed Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials
title_short Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials
title_sort elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9273641/
https://www.ncbi.nlm.nih.gov/pubmed/35817889
http://dx.doi.org/10.1038/s41598-022-16036-2
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