Abnormal Tribological Behavior of Multiwalled Nanotube Rafts Part II: Inclined Rafts

[+] Author and Article Information
Wei Yang, Hongtao Wang

 Department of Engineering Mechanics, Tsinghua University, Beijing 100084, Chinayw-dem@tsinghua.edu.cn

Y. Huang

 Department of Mechanical and Industrial Engineering, University of Illinois, Urbana, IL 61801

J. Eng. Mater. Technol 127(4), 393-399 (Nov 15, 2004) (7 pages) doi:10.1115/1.1867982 History: Received May 22, 2003; Revised November 15, 2004

The analysis in part I of this series is extended to the case of inclined and randomly distributed multiwall carbon nanotube (MWCNT) rafts that are brought into contact. The MWCNTs are modeled by elastic and cylindrically anisotropic materials. The JKR theory of adhesion is adopted. With the incorporation of three-dimensional contact configuration that features the inclined contact, we are able to show that the abnormal tribological behavior, in drastic contrast to the classical Amonton’s law, persists for both inclined and randomly oriented rafts.

Copyright © 2005 by American Society of Mechanical Engineers
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Figure 1

Two inclined MWCNTs brought into contact

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Figure 2

Regular configuration of inclined MWCNT rafts into contact

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Figure 3

The eccentricity e versus inclination angle θ curve

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Figure 4

Variation of the intercept parameter P1 and the slope parameter P2 with respect to the inclination angle θ

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Figure 5

Friction force F versus the applied load p curves for θ=45deg, 30deg, 15deg, and 5deg

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Figure 6

Average friction force F¯ versus pressure p curve



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