Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary

In strong wind area, wind vibration on key railway catenary components may lead to safety hidden danger like fatigue failures. In this work, a load identification approach was proposed by decoupling the wind-induced suspension attitude to acquire the hard-to-get environmental wind load and evaluate...

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Autores principales:	Zhou Wei, Han Tianhu, Liang Xifeng, Bao Jiandong, Li Guofei, Xiao Heting, Liu Dongrun, Liu Bin
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	load identification stress calculation railway catenary attitude decoupling fatigue damage evaluation Technology T Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/76575d09c5c8464a87e6344515f89e3a
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spelling	oai:doaj.org-article:76575d09c5c8464a87e6344515f89e3a2021-12-05T14:11:03ZLoad identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary1605-812710.1515/rams-2021-0037https://doaj.org/article/76575d09c5c8464a87e6344515f89e3a2021-07-01T00:00:00Zhttps://doi.org/10.1515/rams-2021-0037https://doaj.org/toc/1605-8127In strong wind area, wind vibration on key railway catenary components may lead to safety hidden danger like fatigue failures. In this work, a load identification approach was proposed by decoupling the wind-induced suspension attitude to acquire the hard-to-get environmental wind load and evaluate the catenary fatigue damage on railway catenary. In theoretical modeling, mechanical relation between wind load and registration displacement is formulated in pure lateral and vertical loading by finite element analysis. Wind load is identified via suspension attitude decoupling into displacement under individual load. Nodal forces, as the external load acting on catenary connections between supporting beams, are further correlated with the identified wind load to calculate the structural stress of catenary components. In experiment, visual detection is used to measure the wind-induced attitude of catenary suspension in wind area, where maximum wind speed climbs up to 41 m/s. Experimental results are transferred into wind loads and nodal forces using the proposed model. Stress spectra and fatigue damage evaluation of connection components are carried out adopting the rain-flow counting method and damage accumulation rule. Research outcome certifies that the proposed methodology provides an effective means to evaluate the fatigue behavior of railway catenary in wind area.Zhou WeiHan TianhuLiang XifengBao JiandongLi GuofeiXiao HetingLiu DongrunLiu BinDe Gruyterarticleload identificationstress calculationrailway catenaryattitude decouplingfatigue damage evaluationTechnologyTChemical technologyTP1-1185ENReviews on Advanced Materials Science, Vol 60, Iss 1, Pp 377-403 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	load identification stress calculation railway catenary attitude decoupling fatigue damage evaluation Technology T Chemical technology TP1-1185
spellingShingle	load identification stress calculation railway catenary attitude decoupling fatigue damage evaluation Technology T Chemical technology TP1-1185 Zhou Wei Han Tianhu Liang Xifeng Bao Jiandong Li Guofei Xiao Heting Liu Dongrun Liu Bin Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary
description	In strong wind area, wind vibration on key railway catenary components may lead to safety hidden danger like fatigue failures. In this work, a load identification approach was proposed by decoupling the wind-induced suspension attitude to acquire the hard-to-get environmental wind load and evaluate the catenary fatigue damage on railway catenary. In theoretical modeling, mechanical relation between wind load and registration displacement is formulated in pure lateral and vertical loading by finite element analysis. Wind load is identified via suspension attitude decoupling into displacement under individual load. Nodal forces, as the external load acting on catenary connections between supporting beams, are further correlated with the identified wind load to calculate the structural stress of catenary components. In experiment, visual detection is used to measure the wind-induced attitude of catenary suspension in wind area, where maximum wind speed climbs up to 41 m/s. Experimental results are transferred into wind loads and nodal forces using the proposed model. Stress spectra and fatigue damage evaluation of connection components are carried out adopting the rain-flow counting method and damage accumulation rule. Research outcome certifies that the proposed methodology provides an effective means to evaluate the fatigue behavior of railway catenary in wind area.
format	article
author	Zhou Wei Han Tianhu Liang Xifeng Bao Jiandong Li Guofei Xiao Heting Liu Dongrun Liu Bin
author_facet	Zhou Wei Han Tianhu Liang Xifeng Bao Jiandong Li Guofei Xiao Heting Liu Dongrun Liu Bin
author_sort	Zhou Wei
title	Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary
title_short	Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary
title_full	Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary
title_fullStr	Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary
title_full_unstemmed	Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary
title_sort	load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/76575d09c5c8464a87e6344515f89e3a
work_keys_str_mv	AT zhouwei loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary AT hantianhu loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary AT liangxifeng loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary AT baojiandong loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary AT liguofei loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary AT xiaoheting loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary AT liudongrun loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary AT liubin loadidentificationandfatigueevaluationviawindinducedattitudedecouplingofrailwaycatenary
_version_	1718371428712054784

Load identification and fatigue evaluation via wind-induced attitude decoupling of railway catenary

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