Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load

Abstract With regard to the severe vertical and pitching vibration of shearer in actual working conditions, the vertical–pitch coupled dynamics model of shearer with 13 degrees of freedom was established using multi-body dynamics theory. Based on the elasticity theory, Hertz contact and collision dy...

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Autores principales:	Xinwei Yang, Hongyue Chen, Pengfei Li, Xin Wang, Yajing Wei
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5f754be2f3fb426389d675d0dfdb068e
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spelling	oai:doaj.org-article:5f754be2f3fb426389d675d0dfdb068e2021-12-02T17:26:56ZAnalysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load10.1038/s41598-021-98221-32045-2322https://doaj.org/article/5f754be2f3fb426389d675d0dfdb068e2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98221-3https://doaj.org/toc/2045-2322Abstract With regard to the severe vertical and pitching vibration of shearer in actual working conditions, the vertical–pitch coupled dynamics model of shearer with 13 degrees of freedom was established using multi-body dynamics theory. Based on the elasticity theory, Hertz contact and collision dynamics, the connection stiffness model of shear body and the traction section, the rocker arm with clearance and the traction section, the support stiffness models for the guide shoe and the smooth shoe, and the stiffness characteristics model of the rocker arm were constructed respectively. Taking into account the convergence of solution process and the reliability of results, a modified drum load was proposed as the external excitation of the system and the dynamic characteristics of key parts of shearer under different working conditions were analyzed. The numerical models were validated against the vibration responses of the whole machine and critical components of shearer obtained from mechanical test under different operating conditions. The research results provide theoretical basis for the structure optimization and process parameter optimization of shearer.Xinwei YangHongyue ChenPengfei LiXin WangYajing WeiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xinwei Yang Hongyue Chen Pengfei Li Xin Wang Yajing Wei Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load
description	Abstract With regard to the severe vertical and pitching vibration of shearer in actual working conditions, the vertical–pitch coupled dynamics model of shearer with 13 degrees of freedom was established using multi-body dynamics theory. Based on the elasticity theory, Hertz contact and collision dynamics, the connection stiffness model of shear body and the traction section, the rocker arm with clearance and the traction section, the support stiffness models for the guide shoe and the smooth shoe, and the stiffness characteristics model of the rocker arm were constructed respectively. Taking into account the convergence of solution process and the reliability of results, a modified drum load was proposed as the external excitation of the system and the dynamic characteristics of key parts of shearer under different working conditions were analyzed. The numerical models were validated against the vibration responses of the whole machine and critical components of shearer obtained from mechanical test under different operating conditions. The research results provide theoretical basis for the structure optimization and process parameter optimization of shearer.
format	article
author	Xinwei Yang Hongyue Chen Pengfei Li Xin Wang Yajing Wei
author_facet	Xinwei Yang Hongyue Chen Pengfei Li Xin Wang Yajing Wei
author_sort	Xinwei Yang
title	Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load
title_short	Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load
title_full	Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load
title_fullStr	Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load
title_full_unstemmed	Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load
title_sort	analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5f754be2f3fb426389d675d0dfdb068e
work_keys_str_mv	AT xinweiyang analysisonverticalpitchcoupleddynamicscharacteristicsofshearerwithcorrectedload AT hongyuechen analysisonverticalpitchcoupleddynamicscharacteristicsofshearerwithcorrectedload AT pengfeili analysisonverticalpitchcoupleddynamicscharacteristicsofshearerwithcorrectedload AT xinwang analysisonverticalpitchcoupleddynamicscharacteristicsofshearerwithcorrectedload AT yajingwei analysisonverticalpitchcoupleddynamicscharacteristicsofshearerwithcorrectedload
_version_	1718380791280435200

Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load

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