The roughness effect on the frequency of frictional sound
The roughness effect on the frequency of frictional sound
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DOI：
10.1016/j.triboint.2005.11.010
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发表时间：
2007-04-01
影响因子：
6.2
通讯作者：
Kato, Koji
中科院分区：
文献类型：
--
作者：
Stoimenov, Boyko L.;Maruyama, Suguru;Kato, Koji
接触的两个物体的干滑动会产生广泛的效果，如摩擦、磨损、热和声音等。过去，频谱和声压级与表面形貌(特别是表面粗糙度)的关系主要是针对粗糙表面上的触针或半球形针尖销等集中接触而进行的。平板-平板接触的研究主要集中在接触表面的形貌及其与制动系统中尖叫(高音、高声压级声音)发生或不发生的关系。本研究旨在阐明表面粗糙度对干式平板-平板滑动接触中产生的非尖叫摩擦声频率的影响。摩擦表面粗糙度在R-z=0.8-12.4微米范围内变化，声谱由高到低依次为P-1、P-2、P-3、P-4和P-5，峰值频率随摩擦表面粗糙度的变化而移动。第一个峰值P1对表面粗糙度的变化最为敏感，当表面最大粗糙度从R-z=10.9µm变化到3.4µm时，第一个峰值从3.0kHz移动到4.5kHz，当表面比较粗糙时，这个峰值接近于板在2.377 kHz处的第一个弯曲固有频率。(C)2005爱思唯尔有限公司。保留所有权利。
Dry sliding of two bodies in contact generates a wide range of effects like friction, wear, heat and sound among others. The main interest of this study is in the frequency characteristics of the generated sound.In the past, frequency spectrum and sound pressure level with relation to surface topography (surface roughness in particular), have been studied mainly for concentrated contacts like stylus or hemispherical tip pin on a rough surface. Studies on flat-flat contacts were mainly focused on the topography of contacting surfaces and its relation to occurrence or non-occurrence of squeal (high pitch, high sound pressure level sound) in brake systems.The present study aims to clarify the effect of surface roughness on the frequency of non-squealing frictional sound generated in dry flat-flat sliding contact.Sound was generated by the dry contact in rubbing by hand of two rectangular cross-section stainless-steel plates having similar surface roughness. The roughness of the contacting surfaces varied in the range R-z = 0.8-12.4 mu m. The sound spectra had 5 peaks (P-1, P-2, P-3, P-4 and P-5) in order of increasing frequency and it was found that the peak frequency was shifted when the roughness of the rubbed surfaces changed. The first peak P, was most sensitive to change of surface roughness and it shifted from 3.0 to 4.5 kHz when the maximum surface roughness changed from R-z = 10.9 to 3.4 mu m. When the surface was relatively rough, this peak was close to the first bending natural frequency of the plate at 2.377 kHz. (c) 2005 Elsevier Ltd. All rights reserved.