Link-spring model of bump-type foil bearings
Nettet11. nov. 2024 · This paper presents an efficient three-dimensional (3D) structural model for bump-type gas foil bearings (GFBs) developed by considering friction. The foil An … Nettet1. apr. 2024 · The bump foil was modeled as a network of interacting springs, and there are only three degrees of freedom (DOFs) for each bump. Then, this model was extended to the dynamic simulations of a GFB rotor system in [22], in which the friction force was governed by an ordinary differential equation with an approximation of the sign function.
Link-spring model of bump-type foil bearings
Did you know?
Nettet1. apr. 2024 · Frictional energy dissipation inside the foil structure is considered as a key factor in improving the stability of the gas foil bearing (GFB) rotor system.However, the … Nettet21. okt. 2010 · Air-foil bearings (AFBs) are self acting hydrodynamic bearings made from sheet metal foils comprised of at least two layers. The innermost “top foil” layer traps a gas pressure film that supports a load while the layer or layers underneath provide an elastic foundation.
Nettet29. nov. 2024 · Feng K, Kaneko S. Analytical model of bump-type foil bearings using a link-spring structure and a finite-element shell model. J Tribol 2010; 132: 0217061–0217011. Crossref Google Scholar 21. Abdelrasoul M, Kaneko S. A new structural stiffness model for bump-type foil bearings: application to generation II gas … NettetA complete analytical model of bump-type foil bearings taking into consideration the effects of four factors, i.e., the elasticity of bump foil, the interaction forces between bumps, the friction forces at the contact surfaces, and the local deflection of top foil, is presented in this investigation.
Nettet1. jan. 2009 · Bump-type foil bearings, which are considered as the best structure for GFBs, can be simply described as a hydrodynamic bearing utilizing the ambient air as … Nettet12. apr. 2024 · Gas foil bearings (GFBs) are increasingly used in oil-free and high-speed as well as high-temperature fields and show great potential in the nuclear field [1, 2].The bump-type GFB, as shown in Fig. 1, is the most studied and widely used type of GFBs [].Its top foil is supported by one or more compliant corrugated foil strips, and the end …
Nettet1. apr. 2008 · Structural analysis of bump and top foil In the bump foil bearing, the structural parts that play a role as an elastic bearing element are the top and bump foils. Since each element has different characteristic, both analyses were partially conducted and coupling process was executed.
Nettet18. mar. 2024 · Feng K, Kaneko S. Analytical model of bump-type foil bearings using a link-spring structure and a finite-element shell model. J Tribol 2010; 132: 2–021706. Crossref. ... Santos IF. A fully coupled air foil bearing model considering friction – theory & experiment. J Sound Vib 2024; 400: 660–679. Crossref. Google Scholar. 20. ids industrieserviceNettet1. jun. 2024 · The bump-type foil bearings are more elaborate and use two foils (Fig. 1 ): the smooth top foil and the underneath corrugated foil provided with bumps that act … ids in businessNettet7. jun. 2024 · In bump-type foil bearings, the various geometrical parameters such as bump height, bump width, foil thickness, bump length and bump pitch etc. These … is server 2012 r2 still supportedNettet29. nov. 2024 · The integral bump foil strip cannot optimize the performance for the compliant conical foil bearing (CFB) as the uneven distribution of structural stiffness. To maximize the bearing characteristics... Design guidelines for bump-type compliant conical foil bearing - Hongyang Hu, Ming Feng, 2024 Skip to main content ids in chandigarhNettetA numerical model for 3D thermohydrodynamic analysis of bump-type foil bearings with a sparse mesh across the air film is described. The model accounts for heat convection into cooling air, thermal expansion of the bearing components, and material property variations due to temperature rise. ids in collegeNettet1. feb. 2024 · A Review on Modeling and Stability Aspects of Gas Foil Bearing Supported Rotors Article Mar 2024 Debanshu S Khamari Jitesh Kumar Suraj Behera View Show abstract ... Feng and Kaneko [43,44]... id sinew\u0027sNettet5. jul. 2024 · Gas foil bearing has been widely used in high-speed turbo machinery due to its oil-free, wide temperature range, low cost, high adaptability, high stability and environmental friendliness. In this paper, state-of-the-art investigations of gas foil bearings are reviewed, mainly on the development of the high-speed turbo machinery … ids infolease