0
TECHNICAL PAPERS

Contact Behavior of Surfaces Containing Elliptical Asperities With Gaussian and Non-Gaussian Height Distributions

[+] Author and Article Information
Yeau-Ren Jeng1

Department of Mechanical Engineering,  National Chung Cheng University, Ming-Hsiung, Chia-Yi 621, Taiwanimeyrj@ccu.edu.tw

Shin-Rung Peng

Department of Mechanical Engineering,  National Chung Cheng University, Ming-Hsiung, Chia-Yi 621, Taiwan

1

Corresponding author.

J. Tribol 129(4), 743-753 (Apr 10, 2007) (11 pages) doi:10.1115/1.2768073 History: Received October 18, 2006; Revised April 10, 2007

This study investigates the effects of asperity interactions on the mean surface separation and real contact area of rough surfaces containing elliptical asperities with Gaussian and non-Gaussian height distributions. The elastic-plastic contact behavior of surfaces with elliptical asperities with both single-mode and bimodal height distributions are studied. The results indicate that the effects of asperity interactions become more pronounced as the effective radius ratio of the asperities increases. The findings also reveal that the real contact load, the real contact area, and the surface contact mode observed for elliptical asperities are significantly different from those noted for spherical asperities. Furthermore, it is found that the form of the non-Gaussian height distribution has a significant effect on the contact mode of rough surfaces. Specifically, the contact mode of surfaces with a negatively skewed height distribution is found to be more elastic than that of surfaces with a Gaussian height distribution.

FIGURES IN THIS ARTICLE
<>
Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Contacting rough surface in Fig. 1 of Ref. 13

Grahic Jump Location
Figure 2

Geometry of contacting elastic solids in Fig. 2 of Ref. 13

Grahic Jump Location
Figure 3

Geometry of contacting plastic solids in Fig. 3 of Ref. 13

Grahic Jump Location
Figure 4

Variation of mean separation of surfaces with contact load as function of γ for Gaussian surfaces with (a) ψ=0.7 and (b) ψ=2.5

Grahic Jump Location
Figure 5

Variation of real contact area with contact load as function of γ for Gaussian surfaces with (a) ψ=0.7 and (b) ψ=2.5

Grahic Jump Location
Figure 6

(a) Variation of critical contact load with plasticity index as function of γ, and (b) variation of critical contact area with plasticity index as function of γ (Gaussian surfaces)

Grahic Jump Location
Figure 7

Height distributions of Gaussian and non-Gaussian surfaces: (a) Gaussian surfaces with skewness=1, 0, and −1, respectively, and kurtosis=3, and (b) surfaces with typical Weibull non-Gaussian height distributions

Grahic Jump Location
Figure 8

Variation of critical contact area with plasticity index as function of γ for (a) negatively skewed surface and (b) positively skewed surface (Single-mode surface height distributions)

Grahic Jump Location
Figure 9

Variation of critical contact area with plasticity index as function of γ and kurtosis for (a) negatively skewed surface and (b) positively skewed surface (single-mode surface height distributions)

Grahic Jump Location
Figure 10

Variation of critical contact area with plasticity index as function of γ and kurtosis for (a) negatively skewed bimodal surface and (b) positively skewed bimodal surface (bimodal surface height distributions)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In