scholarly journals On the nature of surface roughness with application to contact mechanics, sealing, rubber friction and adhesion

2004 ◽  
Vol 17 (1) ◽  
pp. R1-R62 ◽  
Author(s):  
B N J Persson ◽  
O Albohr ◽  
U Tartaglino ◽  
A I Volokitin ◽  
E Tosatti
Keyword(s):  
Surface Roughness ◽  
Contact Mechanics ◽  
Rubber Friction

Effect of Surface Roughness on Adhesion and Friction of Microfibers in Side Contact

2008 ◽  
Author(s):  
Mircea Teodorescu ◽  
Carmel Majidi ◽  
Homer Rahnejat ◽  
Ronald S. Fearing
Keyword(s):  
Mathematical Model ◽  
Surface Roughness ◽  
Closed Form ◽  
Contact Mechanics ◽  
Elastic Contact ◽  
Linear Elastic ◽  
Multi Scale ◽  
Analytic Approximations ◽  
Effect Of Surface

A multi-scale mathematical model is used to study the effect of surface roughness on the adhesion and friction of microfibers engaged in side contact. Results are compared to closed-form analytic approximations derived from linear elastic contact mechanics.

Analytical modeling of contact mechanics of helical gear tooth by considering surface roughness effects

2020 ◽  
Vol 34 (20) ◽  
pp. 2176-2199
Author(s):  
M. Hodaei ◽  
V. Rabbani ◽  
P. Maghoul ◽  
A. Bahari ◽  
K. Farhang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Contact Mechanics ◽  
Analytical Modeling ◽  
Gear Tooth ◽  
Helical Gear ◽  
Roughness Effects

The Investigation of Energy Loss in Conformal Contact Mechanics of Carpal-Radial Components in Wrist Arthroplasty

2014 ◽  
Author(s):  
Mohammad Hodaei ◽  
Kambiz Farhang
Keyword(s):  
Surface Roughness ◽  
Energy Loss ◽  
Contact Mechanics ◽  
Contact Force ◽  
Rough Surfaces ◽  
Approximate Equation ◽  
Integral Function ◽  
Contact Model ◽  
Metal Debris ◽  
Surface Separation

The contact mechanics of Wrist prosthetic implant is considered in which the surface roughness of the implant is included. Total wrist replacements are developed to perform wrist function as near normal as possible. The main goal of wrist replacement surgery is to relieve patients from painful arthritis and to maintain function in the wrist and hand. The gradual wearing away of the cartilage covering on bones can lead to the most common form of arthritis, usually osteoarthritis. Wear is a very important issue in wrist implant. Metal debris caused by excessive wear in wrist implant can lead to toxicity and patient discomfort. Since implant wear can be the result of contact between surfaces of Carpal and Radial components, so the investigation of the effect of roughness between wrist components and establishing a model for interaction of surface roughness is very important. There are several different designs of wrist implant. Most of them have two components that are made of metal. A high quality plastic called polyethylene is used as a space between the two components. The purpose of this paper is to investigate the effect of roughness between interaction of these metal and polyethylene in wrist implants. This paper develops a contact model to treat the interaction of Carpal - Radial Components. The contact model describes the interaction of implant rough surfaces including both elastic and plastic deformations. In the model, surfaces are investigated as macroscopically conforming semi-Cylinder containing micron-scale roughness. The derived equations relate contact force on the implant and the minimum mean surface separation of the rough surfaces. Based on the distribution of asperity heights, the force is expressed using statistical integral function of asperity heights over the possible region of interaction of the roughness of the implant surfaces. Closed-form approximate equation relating contact force and minimum separation is used to obtain energy loss per cycle in a load-unload sequence applied to the implant.

Viscoelastic rough contact mechanics: A multiscale investigation

2016 ◽  
Vol 230 (9) ◽  
pp. 1374-1381 ◽  
Author(s):  
C Putignano
Keyword(s):  
Surface Roughness ◽  
Contact Mechanics ◽  
Full Understanding ◽  
Crucial Issue ◽  
Engineering Research ◽  
Modern Engineering ◽  
Equivalent Modulus ◽  
Definition Of ◽  
Contact Domain ◽  
Viscoelastic Contact

The full understanding of the viscoelastic contact mechanics between rough surfaces is a crucial issue in modern engineering research. This paper investigates the role that the number of rough scales, i.e. the cut-off of the power spectrum of the surface roughness, has on quantities like contact area, mean separation, and friction. Furthermore, an effective, though approximate, definition of an equivalent modulus is provided in order to reduce the viscoelastic contact domain to an elastic equivalent one.

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