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Design Method for Constant Force Components Based on Superelastic SMA
Clamping devices with constant force or pressure are desired in medical instruments, such as hemostatic forceps and the artificial sphincter, to prevent soft tissues from injures due to overloading. This paper studies the design method issues in constant force components using superelastic shape mem...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6766029/ https://www.ncbi.nlm.nih.gov/pubmed/31487779 http://dx.doi.org/10.3390/ma12182842 |
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author | Wang, Minghui Yu, Hongliu Shi, Ping Meng, Qiaoling |
author_facet | Wang, Minghui Yu, Hongliu Shi, Ping Meng, Qiaoling |
author_sort | Wang, Minghui |
collection | PubMed |
description | Clamping devices with constant force or pressure are desired in medical instruments, such as hemostatic forceps and the artificial sphincter, to prevent soft tissues from injures due to overloading. This paper studies the design method issues in constant force components using superelastic shape memory alloy. A generalized method for generating a constant force components-based shape memory alloy is proposed. An example of a C-shaped shape memory alloy sheet with a thickness of 0.2 mm is presented. The design results using the generalized design method for a C-shaped shape memory alloy sheet with 0.2 mm thickness are compared with its experimental results. Based on the generalized design method, the obtained design solutions for Cases 1 and 2 are coincident with the results obtained by the experiments. It could be seen that the generated design shape of the superelastic shape memory alloy component might obtain constant force within a relatively large deformation range. It is validated that the proposed generalized design method was feasible and effective. It is also illustrated that changing the geometric dimensions of the superelastic SMA component might obtain constant force within a relatively large deformation range. |
format | Online Article Text |
id | pubmed-6766029 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-67660292019-09-30 Design Method for Constant Force Components Based on Superelastic SMA Wang, Minghui Yu, Hongliu Shi, Ping Meng, Qiaoling Materials (Basel) Article Clamping devices with constant force or pressure are desired in medical instruments, such as hemostatic forceps and the artificial sphincter, to prevent soft tissues from injures due to overloading. This paper studies the design method issues in constant force components using superelastic shape memory alloy. A generalized method for generating a constant force components-based shape memory alloy is proposed. An example of a C-shaped shape memory alloy sheet with a thickness of 0.2 mm is presented. The design results using the generalized design method for a C-shaped shape memory alloy sheet with 0.2 mm thickness are compared with its experimental results. Based on the generalized design method, the obtained design solutions for Cases 1 and 2 are coincident with the results obtained by the experiments. It could be seen that the generated design shape of the superelastic shape memory alloy component might obtain constant force within a relatively large deformation range. It is validated that the proposed generalized design method was feasible and effective. It is also illustrated that changing the geometric dimensions of the superelastic SMA component might obtain constant force within a relatively large deformation range. MDPI 2019-09-04 /pmc/articles/PMC6766029/ /pubmed/31487779 http://dx.doi.org/10.3390/ma12182842 Text en © 2019 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 Wang, Minghui Yu, Hongliu Shi, Ping Meng, Qiaoling Design Method for Constant Force Components Based on Superelastic SMA |
title | Design Method for Constant Force Components Based on Superelastic SMA |
title_full | Design Method for Constant Force Components Based on Superelastic SMA |
title_fullStr | Design Method for Constant Force Components Based on Superelastic SMA |
title_full_unstemmed | Design Method for Constant Force Components Based on Superelastic SMA |
title_short | Design Method for Constant Force Components Based on Superelastic SMA |
title_sort | design method for constant force components based on superelastic sma |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6766029/ https://www.ncbi.nlm.nih.gov/pubmed/31487779 http://dx.doi.org/10.3390/ma12182842 |
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