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Cylindrical joint

About: Cylindrical joint is a research topic. Over the lifetime, 177 publications have been published within this topic receiving 1211 citations.


Papers
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Journal ArticleDOI
TL;DR: In this paper, a new approach to model and analyze flexible spatial multibody systems with clearance of cylindrical joints is presented, where flexible parts are modeled by using absolute nodal coordinate formulation (ANCF)-based elements, while the rigid parts are described by employing the natural coordinate formulation, which can lead to a constant system mass matrix for the derived system equations of motion.
Abstract: A new approach to model and analyze flexible spatial multibody systems with clearance of cylindrical joints is presented in this work. The flexible parts are modeled by using absolute nodal coordinate formulation (ANCF)-based elements, while the rigid parts are described by employing the natural coordinate formulation (NCF), which can lead to a constant system mass matrix for the derived system equations of motion. In a simple way, a cylindrical joint with clearance is composed of two main elements, that is, a journal inside a bearing. Additionally, a lubricant fluid can exist between these two mechanical elements to reduce the friction and wear and increase the system’s life. For the case in which the joint is modeled as a dry contact pair, a technique using a continuous approach for the evaluation of the contact force is applied, where the energy dissipation in the form of hysteresis damping is considered. Furthermore, the frictional forces developed in those contacts are evaluated by using a modified Coulomb’s friction law. For the lubricated case, the hydrodynamic theory for dynamically loaded journal bearings is used to compute the forces generated by lubrication actions. The lubricated model is based on the Reynolds equation developed for the case of journal bearings with length-to-diameter ratios up to 1. Using this approach, the misalignment of the journal inside the bearing can be studied. Finally, two demonstrative examples of application are used to provide results that support the discussion and show the validity of the proposed methodologies.

178 citations

Journal ArticleDOI
TL;DR: In this paper, an approximate model for the contact problem of cylindrical joints with clearances is developed through modeling the pin as a rigid wedge and the elastic plate as a simple Winkler elastic foundation.

142 citations

Journal ArticleDOI
TL;DR: In this paper, a new methodology is proposed for the dynamic analysis of rigid-flexible multibody systems with ElastoHydroDynamic (EHD) lubricated cylindrical joints.

119 citations

Journal ArticleDOI
TL;DR: In this paper, the authors discuss the finite element implementation of the internal constraints in a 3D geometrically exact beam model which can be formulated as holonomic constraint relationships.

74 citations

Patent
27 Jul 1995
TL;DR: In this article, an antenna unit for use in a navigation system includes a bottom cover and a unit case, a circuit board and an antenna main body are stored in the bottom cover, a cylindrical storage portion in the unit case is for storing the circuit board.
Abstract: An antenna unit for use in a navigation system includes a bottom cover and a unit case, a circuit board and an antenna main body are stored in the bottom cover, a cylindrical storage portion in the bottom cover is for storing the circuit board and the antenna main body therein, the cylindrical storage portion being formed integrally with the surface of the bottom cover, a cylindrical joint portion being threaded with the cylindrical storage portion, said cylindrical joint portion being formed integrally in the unit case, and the cylindrical joint portion being threaded with the cylindrical storage portion.

74 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20221
20211
20203
20197
201810
20172