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RISA Laser Surface Textured Journal Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The potential use of laser surface texturing (LST) in hydrodynamic journal bearings is examined theoretically. The regular surface texture has the form of micro-dimples with preselected diameter, ...
Dynamics of a Rotating System With a Nonlinear Eddy-Current Damper
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We investigate the nonlinear dynamics and stability of a rotating system with an electromagnetic noncontact eddy-current damper. The damper is modeled by a thin nonmagnetic disk that is translating ...
Stiffness and Efficiency Optimization of a Hydrostatic Laser Surface Textured Gas Seal
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Microdimples generated by laser surface texturing (LST) can be used to enhance performance in hydrostatic gas-lubricated mechanical seals. This is achieved by applying microdimples with high area ...
A Model for Contact and Static Friction of Nominally Flat Rough Surfaces Under Full Stick Contact Condition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A model for elastic-plastic nominally flat contacting rough surfaces under combined normal and tangential loading with full stick contact condition is presented. The model incorporates an accurate ...
The Effect of Surface Roughness on Static Friction and Junction Growth of an Elastic-Plastic Spherical Contact
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A model for elastic-plastic spherical contact of rough surfaces under combined normal and tangential loadings, with full stick contact condition, is presented. The model allows evaluation of the ...
A Model for Junction Growth of a Spherical Contact Under Full Stick Condition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The evolution of the contact area (junction growth) of an elastic-plastic preloaded spherical contact subjected to an additional tangential loading is investigated theoretically. The normal preloading, ...
The Validity of Linear Elasticity in Analyzing Surface Texturing Effect for Elastohydrodynamic Lubrication
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a nonlinear theoretical model to study the effect of laser surface texturing on the tribological performance in soft elastohydrodynamic lubrication. Both geometrical and physical ...
The Evolution of Static Friction for Elastic-Plastic Spherical Contact in Pre-sliding
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The evolution of static friction and tangential stiffness in presliding of an elastic-plastic sphere in contact with a rigid flat, under full stick contact condition, is analyzed. Empirical ...
Analytical and Experimental Evaluation of Instability in Rotordynamic System With Electromagnetic Eddy-Current Damper
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: There have been a number of papers published that concern the design and operation of electromagnetic, eddy-current dampers for controlling lateral vibration of rotating machinery. Many of these ...
Improving Tribological Performance of Piston Rings by Partial Surface Texturing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An analytical model is developed to study the potential use of partial laser surface texturing (LST) for reducing the friction between a piston ring and cylinder liner. The hydrodynamic pressure ...