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RISAn Elliptical Elastic-Plastic Microcontact Model Developed for an Ellipsoid in Contact With a Smooth Rigid Flat
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The determination of the elastoplastic deformation regime arising at the microcontact of a deformable ellipsoid and a rigid smooth flat was the main purpose of this study. One-eighth of an ...
A New Method for Elastic-Plastic Contact Analysis of a Deformable Sphere and a Rigid Flat
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new method is developed in the present study to determine the elastoplastic regime of a spherical asperity in terms of the interference of two contact surfaces. This method provides an ...
A 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 ...
Variation in Fractal Properties and Non-Gaussian Distributions of Microcontact Between Elastic-Plastic Rough Surfaces With Mean Surface Separation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The fractal parameters (fractal dimension and topothesy), describing the contact behavior of rough surface, were considered as constant in the earlier models. However, their results are often ...
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 ...
Effect of Fluctuations in the Brush Conformation on the Interaction Between Polymer Brushes in a Good Solvent
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study presents a novel approach for analyzing the interaction between two parallel surfaces grafted with polymer brushes in a good solvent. In the proposed approach, molecular dynamics ...
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 ...
A New Method Developed for Brittle and Ductile Materials to Evaluate Mechanical Properties of a Lump Specimen in the Use of Indentation Test
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, the load-depth (P‐h) relationships matching the experimental results of the nanoindentation tests exhibited at the subregions of small and large depths are obtained, respectively. ...
Kinematic Analysis of the Ball Screw Mechanism Considering Variable Contact Angles and Elastic Deformations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The theoretical analyses developed by Lin et al. 6 for the kinematics of the ball screw mechanism have been partly adapted for the present study. In order to better understand the sliding ...
Fractal Model Developed for Elliptic Elastic-Plastic Asperity Microcontacts of Rough Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An elastic-plastic asperity fractal model for analyzing the contact of rough surfaces is presented. Instead of using the power-law relation, which is widely used to predict the number, N, of ...