A new elastohydrodynamic lubricated spherical joint model for rigid-flexible multibody dynamics

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• 作者：Qiang Tian^a ; ^{tianqiang_hust@aliyun.com} ; Jie Lou^a ; ^{loujie5230@163.com} ; Aki Mikkola^b ; ^{Aki.Mikkola@lut.fi}
• 关键词：Elastohydrodynamic (EHD) ; Spherical joint ; ANCF-RN ; Isoparametric pentahedron element ; Hip joint
• 刊名：Mechanism and Machine Theory
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：107
• 期：Complete
• 页码：210-228
• 全文大小：3150 K
• 卷排序：107

文摘

A new elastohydrodynamic (EHD) lubricated spherical joint model for flexible multibody dynamics is proposed. A new isoparametric fifteen-node pentahedron finite element is proposed to mesh the spherical joint socket. A finite-difference grid rotation scheme is proposed to address the lubrication interface non-conformance problem. The coupling dynamics of a rigid flexible multibody system with EHD lubricated spherical joint is studied. The proposed joint can be further used to model the human artificial hip joints.