Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending

This paper presents an experiment and analysis to investigate the response and failure of 6061-T6 aluminum alloy round-hole tubes with different hole diameters of 2, 4, 6, 8, and 10 mm subjected to cyclic bending at different curvature ratios of −1.0, −0.5, 0.0, and +0.5. The curvature ratio is defi...

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Autores principales:	Kuo-Long Lee, Yu-Chun Tsai, Wen-Fung Pan
Formato:	article
Lenguaje:	EN
Publicado:	SAGE Publishing 2021
Materias:	Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/4db22f3c3f514eba8ebc3ed1b2169221
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spelling	oai:doaj.org-article:4db22f3c3f514eba8ebc3ed1b21692212021-12-02T03:33:38ZMean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending1687-814010.1177/16878140211062273https://doaj.org/article/4db22f3c3f514eba8ebc3ed1b21692212021-11-01T00:00:00Zhttps://doi.org/10.1177/16878140211062273https://doaj.org/toc/1687-8140This paper presents an experiment and analysis to investigate the response and failure of 6061-T6 aluminum alloy round-hole tubes with different hole diameters of 2, 4, 6, 8, and 10 mm subjected to cyclic bending at different curvature ratios of −1.0, −0.5, 0.0, and +0.5. The curvature ratio is defined as the minimum curvature divides by the maximum curvature. Four different curvature ratios are employed to highlight the mean curvature effect. It can be seen from the experimental results that the moment-curvature relationships gradually relax and become steady states after a few bending cycles for curvature ratios of −0.5, 0.0, and +0.5. The ovalization-curvature relationship depicts an asymmetrical, ratchetting and increasing as the number of bending cycles increases for all curvature ratios. In addition, for each hole diameter, the relationships between the curvature range and the number of bending cycles necessary to initiate failure on double logarithmic coordinates display four almost-parallel straight lines for four different curvature ratios. Finally, this paper introduces an empirical formula to simulate the above relationships. By comparing with experimental results, the analysis can reasonably describe the experimental results.Kuo-Long LeeYu-Chun TsaiWen-Fung PanSAGE PublishingarticleMechanical engineering and machineryTJ1-1570ENAdvances in Mechanical Engineering, Vol 13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mechanical engineering and machinery TJ1-1570
spellingShingle	Mechanical engineering and machinery TJ1-1570 Kuo-Long Lee Yu-Chun Tsai Wen-Fung Pan Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending
description	This paper presents an experiment and analysis to investigate the response and failure of 6061-T6 aluminum alloy round-hole tubes with different hole diameters of 2, 4, 6, 8, and 10 mm subjected to cyclic bending at different curvature ratios of −1.0, −0.5, 0.0, and +0.5. The curvature ratio is defined as the minimum curvature divides by the maximum curvature. Four different curvature ratios are employed to highlight the mean curvature effect. It can be seen from the experimental results that the moment-curvature relationships gradually relax and become steady states after a few bending cycles for curvature ratios of −0.5, 0.0, and +0.5. The ovalization-curvature relationship depicts an asymmetrical, ratchetting and increasing as the number of bending cycles increases for all curvature ratios. In addition, for each hole diameter, the relationships between the curvature range and the number of bending cycles necessary to initiate failure on double logarithmic coordinates display four almost-parallel straight lines for four different curvature ratios. Finally, this paper introduces an empirical formula to simulate the above relationships. By comparing with experimental results, the analysis can reasonably describe the experimental results.
format	article
author	Kuo-Long Lee Yu-Chun Tsai Wen-Fung Pan
author_facet	Kuo-Long Lee Yu-Chun Tsai Wen-Fung Pan
author_sort	Kuo-Long Lee
title	Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending
title_short	Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending
title_full	Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending
title_fullStr	Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending
title_full_unstemmed	Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending
title_sort	mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending
publisher	SAGE Publishing
publishDate	2021
url	https://doaj.org/article/4db22f3c3f514eba8ebc3ed1b2169221
work_keys_str_mv	AT kuolonglee meancurvatureeffectontheresponseandfailureofroundholetubessubmittedtocyclicbending AT yuchuntsai meancurvatureeffectontheresponseandfailureofroundholetubessubmittedtocyclicbending AT wenfungpan meancurvatureeffectontheresponseandfailureofroundholetubessubmittedtocyclicbending
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Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending

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