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Analysis of an Aerodynamic Compliant Foil Thrust Bearing: Method for a Rapid Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A very simple design method for an aerodynamic compliant foil thrust bearing is presented in this paper. It is based on 3D modeling (called: complete direct calculation) of the elastoaerodynamic ...
Maximum Load Capacity Profiles for Gas Thrust Bearings Working Under High Compressibility Number Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To meet the requirements of new commercial equipment, performances of air thrust bearings always have to be improved. This work is concerned with the research of the converging profile that ...
Granular Lubrication: Toward an Understanding of the Transition Between Kinetic and Quasi-Fluid Regime
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper is devoted to the understanding of flow characteristics of granular lubrication. The regimes of interest are: the kinetic regime in which collisions between particles are essentially ...
Solid Third Body Analysis Using a Discrete Approach: Influence of Adhesion and Particle Size on Macroscopic Properties
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamics of solid third bodies sheared between two rubbing bodies is far from being understood. Yet, this interface plays a prominent role in the velocity accommodation and in the load ...
A Granular Dynamic Model for the Degradation of Material
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The work presented here is a model of the degradation of a material (by particle detachment), based on a two dimensional granular dynamic model designed to study the flows of third body ...
Multi-Constrained Optimization of Running Characteristics of Mechanisms Lubricated With Compressible Fluid
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The optimal design of gas-lubricated contacts is addressed, with emphasis on appropriate strategies for the management of constraints that usually arise from physical or manufacturing considerations. ...
On Nonlinear Rotor Dynamic Effects of Aerodynamic Bearings With Simple Flexible Rotors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The last decades have experienced a growing enhancement of aeronautical oil free turbomachinery. The classical linear approach of rotor dynamics commonly uses stiffness and damping coefficients ...
Friction Coefficient as a Macroscopic View of Local Dissipation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an overview of a discrete element method approach to dry friction in the presence of a third body. Three dimensional computer simulations have been carried out to show the ...
A Review of Recent Approaches for Modeling Solid Third Bodies
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper considers the behavior of third bodies in dry contacts. A description of the mechanism operating in contacts is given and the influence of external parameters outlined. Both physicochemical ...
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