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RISA New Method Developed for Fractal Dimension and Topothesy Varying With the Mean Separation of Two Contact Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Instead of a general consideration of the fractal dimension (D) and the topothesy (G*) as two invariants in the fractal analysis of surface asperities, these two roughness parameters in the ...
A New Microcontact Model Developed for Variable Fractal Dimension, Topothesy, Density of Asperity, and Probability Density Function of Asperity Heights
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present study, the fractal theory is applied to modify the conventional model (the Greenwood and Williamson model) established in the statistical form for the microcontacts of two contact ...
A Microcontact Non-Gaussian Surface Roughness Model Accounting for Elastic Recovery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Most statistical contact analyses assume that asperity height distributions (g(z*)) follow a Gaussian distribution. However, engineered surfaces are frequently non-Gaussian with the type dependent ...
Fractal Theory Applied to Evaluate the Tribological Performances of Two Greases Demonstrated in Four-Ball Tests
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present study, two commercial greases with different rheological properties were subjected to four-ball tests to identify their performance in anti-wear and anti-scuffing. A wear test ...