Clarkson University
The CAMP building
Of Interest
CRCD Home
ME 637 Home
Syllabus
Assignments
Downloads
Site Map
Course Notes
Engineering Mathematics
Review of Viscous Flows
Review of Computational Fluid Mechanics
Review of Turbulence and Turbulence Modeling

Particle Adhesion
Colloids
Simulation Methods
Experimental Techniques
Applications
Search Powered by Google

The National Science Foundation
ME 637 The National Science Foundation
 Particle Adhesion
Van der Waals Force | JKR and Other Adhesion Models | Particle Adhesion & Removal | Effects of Charge | Effect of Humidity | Ultrasonic and Megasonic Cleaning

JKR and Other Adhesion Models

DMT Model

Derjaguin-Muller-Toporov (1975) assumed that the Hertz deformation and developed another model that included the effect of adhesion force. According to the DMT model, the pull-off force is given as
,  ( ) (7)

Contact Radius at Zero Force

 The contact radius at zero external force is given as
 (Hertz contact radius under adhesion force) (8)

Contact Radius at Separation

 The DMT model predicts that the contact radius at the separation is zero. That is
a = 0 (at separation) (9)



Dr. Goodarz Ahmadi | Turbulence & Multiphase Fluid Flow Laboratory | Department of Mechanical & Aeronautical Engineering
Copyright © 2002-2005 Dr. Goodarz Ahmadi. All rights reserved.
Potsdam, New York, 13699
ahmadi@clarkson.edu