Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment

The excitation technology for high-g-level shock environment experiments is currently a topic of interest, for which velocity amplification by collisions of vertically stacked bodies has been used to develop high-g shock tests with great success. This study investigated the superelastic collision ef...

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Autores principales: Duan, Zhengyong, Zeng, Qihang, Tang, Dayong, Peng, Yingchun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9911752/
https://www.ncbi.nlm.nih.gov/pubmed/36759709
http://dx.doi.org/10.1038/s41598-023-29538-4
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author Duan, Zhengyong
Zeng, Qihang
Tang, Dayong
Peng, Yingchun
author_facet Duan, Zhengyong
Zeng, Qihang
Tang, Dayong
Peng, Yingchun
author_sort Duan, Zhengyong
collection PubMed
description The excitation technology for high-g-level shock environment experiments is currently a topic of interest, for which velocity amplification by collisions of vertically stacked bodies has been used to develop high-g shock tests with great success. This study investigated the superelastic collision effects generated during high-velocity one-dimensional three-body impacts. Theoretical formulae were derived in brief for an analytical investigation of the collisions. Four experiments were performed with different initial velocities obtained from free-falls from different heights. Velocity gains larger than 5 were obtained for the three-body collisions, and coefficients of restitution larger than 2.5 were observed for the second impact. The experimental results well verified the existence of superelastic collision effects in the one-dimensional three-body impacts.
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spelling pubmed-99117522023-02-11 Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment Duan, Zhengyong Zeng, Qihang Tang, Dayong Peng, Yingchun Sci Rep Article The excitation technology for high-g-level shock environment experiments is currently a topic of interest, for which velocity amplification by collisions of vertically stacked bodies has been used to develop high-g shock tests with great success. This study investigated the superelastic collision effects generated during high-velocity one-dimensional three-body impacts. Theoretical formulae were derived in brief for an analytical investigation of the collisions. Four experiments were performed with different initial velocities obtained from free-falls from different heights. Velocity gains larger than 5 were obtained for the three-body collisions, and coefficients of restitution larger than 2.5 were observed for the second impact. The experimental results well verified the existence of superelastic collision effects in the one-dimensional three-body impacts. Nature Publishing Group UK 2023-02-09 /pmc/articles/PMC9911752/ /pubmed/36759709 http://dx.doi.org/10.1038/s41598-023-29538-4 Text en © The Author(s) 2023 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
Duan, Zhengyong
Zeng, Qihang
Tang, Dayong
Peng, Yingchun
Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment
title Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment
title_full Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment
title_fullStr Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment
title_full_unstemmed Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment
title_short Theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment
title_sort theoretical and experimental study of the “superelastic collision effects” used to excite high-g shock environment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9911752/
https://www.ncbi.nlm.nih.gov/pubmed/36759709
http://dx.doi.org/10.1038/s41598-023-29538-4
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