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Effect of the cut-off frequency on rough-point and flat-surface contacts?

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Abstract

In the past years, contact between two bodies has been studied from various ways that do not consider the cut-off frequency effect on the contact mechanism. This paper reports the correlation between rough point contact and flat surface contact at different cut-off frequencies of filter. The similarity and difference between the two types of contact mechanisms are presented for materials with linear or elasticperfectly plastic deformation. The conjugate gradient method (CGM) is used for analysing the rough point contact, while the rough flat surface contact is studied with an improved CGM in which the influence coefficient for the elastic deformation of the rough flat surface is obtained with finite element method. Numerical results show that for the above two types of contacts, their von Mises stress and maximum shear stress are greatly affected by the cut-off frequency of a high-pass filter. Moreover, a decrease in the cut-off frequency leads to an increase in the contact area and a decrease in the approach for the rough flat surface contact, while the opposite variations is for the point contact between rough bodies with the small radii.

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Authors and Affiliations

  1. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, China

    Fanming Meng

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  1. Fanming Meng
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Correspondence to Fanming Meng.

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Recommended by Editor Sung-Lim Ko

Fanming Meng is currently a professor in the State Key Laboratory of Mechanical Transmission of Chongqing University in China. He received his B.S. (1996), M.S. (2000), and Ph.D (2005) in mechanical engineering from Henan Agriculture University, Zhengzhou University and Xi’an Jiaotong University in China, respectively. Between 2005–2007 and 2008–2010, he worked at the State Key Laboratory of Tribology at Tsinghua University in China as a postdoctor, and at Northwestern University of US as a research scientist, respectively. His research covers new types of bearings and gears, contact mechanics, and surface texturing. He has published more than 70 peer-reviewed journal papers and more than 10 referred conference papers. He owns eight patents. He is a senior member of Chinese Society for Mechanical Engineering.

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Meng, F. Effect of the cut-off frequency on rough-point and flat-surface contacts?. J Mech Sci Technol 26, 2889–2901 (2012). https://doi.org/10.1007/s12206-012-0712-0

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  • DOI: https://doi.org/10.1007/s12206-012-0712-0

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