Effects of groove factor and surface roughness of raceway in ball-bearing-like specimens on tribological behavior and the onsets of two instabilities of dry contacts

Chang Fu Han, Hsiao Yeh Chu, Ruei Yang Luo, Neng Tung Liao, Chin Chung Wei, Guan Lin Chen, Ping Hsueh Tsai, Yueh Lin Chiu, Yih Chyun Hwang, Jen Fin Lin

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Ball-bearing-like specimens are prepared with three groove factors (GF ≡ r/D; r: radius of groove; D: diameter of ball). Analyses of operating conditions are conducted for the thrust loads applied to the dry-contact specimens running with the maximum contact stress close to 2.0 GPa. The combined effect of surface roughness ((Ra)inner) of the inner raceway and groove factor becomes the controlling factor for the slip ratio (SR) arising at the tribocontact of ball and inner raceway, and the average friction coefficient (μ¯) of specimen. Both the inception time (TBR) of the instability in the running-in process and the inception time (TBS) of the instability arising in specimen's base material are governed by the average value (SR¯) of SR. The wavinesses of raceway are the controlling factor for the significant rise of frictional torque in the running-in regime and the TBR value. The fluctuations of frictional torque arising at the time behind TBR are confirmed to be the instability arising in the base material. The theoretical prediction for TBS is determined when μ¯ reaches the threshold value, (μ¯)threshold. For the specimens with the same GF, increasing (Ra)inner can elevate SR¯ and μ¯. In the specimens with a relatively smaller (Ra)inner, GF is the dominant factor for SR¯; however, (Ra)inner becomes the dominant factor for SR¯ if the inner raceway is prepared with a relatively larger (Ra)inner. Increasing GF can result in a μ¯ reduction, irrespective of the (Ra)inner value. Both TBS and TBR are reduced by the increasing SR¯. The wear losses of ball and the two raceways, however, increase as increasing SR¯.

Original languageEnglish
Pages (from-to)126-139
Number of pages14
JournalWear
Volume406-407
DOIs
Publication statusPublished - 2018 Jul 15

Fingerprint

ball bearings
Ball bearings
grooves
surface roughness
slip
roughness
Surface roughness
Torque
balls
Wear of materials
Friction
thrust loads
torque
thresholds
coefficient of friction
radii

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Han, Chang Fu ; Chu, Hsiao Yeh ; Luo, Ruei Yang ; Liao, Neng Tung ; Wei, Chin Chung ; Chen, Guan Lin ; Tsai, Ping Hsueh ; Chiu, Yueh Lin ; Hwang, Yih Chyun ; Lin, Jen Fin. / Effects of groove factor and surface roughness of raceway in ball-bearing-like specimens on tribological behavior and the onsets of two instabilities of dry contacts. In: Wear. 2018 ; Vol. 406-407. pp. 126-139.
@article{67973760124842b981cc5c13e69d3f4e,
title = "Effects of groove factor and surface roughness of raceway in ball-bearing-like specimens on tribological behavior and the onsets of two instabilities of dry contacts",
abstract = "Ball-bearing-like specimens are prepared with three groove factors (GF ≡ r/D; r: radius of groove; D: diameter of ball). Analyses of operating conditions are conducted for the thrust loads applied to the dry-contact specimens running with the maximum contact stress close to 2.0 GPa. The combined effect of surface roughness ((Ra)inner) of the inner raceway and groove factor becomes the controlling factor for the slip ratio (SR) arising at the tribocontact of ball and inner raceway, and the average friction coefficient (μ¯) of specimen. Both the inception time (TBR) of the instability in the running-in process and the inception time (TBS) of the instability arising in specimen's base material are governed by the average value (SR¯) of SR. The wavinesses of raceway are the controlling factor for the significant rise of frictional torque in the running-in regime and the TBR value. The fluctuations of frictional torque arising at the time behind TBR are confirmed to be the instability arising in the base material. The theoretical prediction for TBS is determined when μ¯ reaches the threshold value, (μ¯)threshold. For the specimens with the same GF, increasing (Ra)inner can elevate SR¯ and μ¯. In the specimens with a relatively smaller (Ra)inner, GF is the dominant factor for SR¯; however, (Ra)inner becomes the dominant factor for SR¯ if the inner raceway is prepared with a relatively larger (Ra)inner. Increasing GF can result in a μ¯ reduction, irrespective of the (Ra)inner value. Both TBS and TBR are reduced by the increasing SR¯. The wear losses of ball and the two raceways, however, increase as increasing SR¯.",
author = "Han, {Chang Fu} and Chu, {Hsiao Yeh} and Luo, {Ruei Yang} and Liao, {Neng Tung} and Wei, {Chin Chung} and Chen, {Guan Lin} and Tsai, {Ping Hsueh} and Chiu, {Yueh Lin} and Hwang, {Yih Chyun} and Lin, {Jen Fin}",
year = "2018",
month = "7",
day = "15",
doi = "10.1016/j.wear.2018.03.006",
language = "English",
volume = "406-407",
pages = "126--139",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",

}

Effects of groove factor and surface roughness of raceway in ball-bearing-like specimens on tribological behavior and the onsets of two instabilities of dry contacts. / Han, Chang Fu; Chu, Hsiao Yeh; Luo, Ruei Yang; Liao, Neng Tung; Wei, Chin Chung; Chen, Guan Lin; Tsai, Ping Hsueh; Chiu, Yueh Lin; Hwang, Yih Chyun; Lin, Jen Fin.

In: Wear, Vol. 406-407, 15.07.2018, p. 126-139.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of groove factor and surface roughness of raceway in ball-bearing-like specimens on tribological behavior and the onsets of two instabilities of dry contacts

AU - Han, Chang Fu

AU - Chu, Hsiao Yeh

AU - Luo, Ruei Yang

AU - Liao, Neng Tung

AU - Wei, Chin Chung

AU - Chen, Guan Lin

AU - Tsai, Ping Hsueh

AU - Chiu, Yueh Lin

AU - Hwang, Yih Chyun

AU - Lin, Jen Fin

PY - 2018/7/15

Y1 - 2018/7/15

N2 - Ball-bearing-like specimens are prepared with three groove factors (GF ≡ r/D; r: radius of groove; D: diameter of ball). Analyses of operating conditions are conducted for the thrust loads applied to the dry-contact specimens running with the maximum contact stress close to 2.0 GPa. The combined effect of surface roughness ((Ra)inner) of the inner raceway and groove factor becomes the controlling factor for the slip ratio (SR) arising at the tribocontact of ball and inner raceway, and the average friction coefficient (μ¯) of specimen. Both the inception time (TBR) of the instability in the running-in process and the inception time (TBS) of the instability arising in specimen's base material are governed by the average value (SR¯) of SR. The wavinesses of raceway are the controlling factor for the significant rise of frictional torque in the running-in regime and the TBR value. The fluctuations of frictional torque arising at the time behind TBR are confirmed to be the instability arising in the base material. The theoretical prediction for TBS is determined when μ¯ reaches the threshold value, (μ¯)threshold. For the specimens with the same GF, increasing (Ra)inner can elevate SR¯ and μ¯. In the specimens with a relatively smaller (Ra)inner, GF is the dominant factor for SR¯; however, (Ra)inner becomes the dominant factor for SR¯ if the inner raceway is prepared with a relatively larger (Ra)inner. Increasing GF can result in a μ¯ reduction, irrespective of the (Ra)inner value. Both TBS and TBR are reduced by the increasing SR¯. The wear losses of ball and the two raceways, however, increase as increasing SR¯.

AB - Ball-bearing-like specimens are prepared with three groove factors (GF ≡ r/D; r: radius of groove; D: diameter of ball). Analyses of operating conditions are conducted for the thrust loads applied to the dry-contact specimens running with the maximum contact stress close to 2.0 GPa. The combined effect of surface roughness ((Ra)inner) of the inner raceway and groove factor becomes the controlling factor for the slip ratio (SR) arising at the tribocontact of ball and inner raceway, and the average friction coefficient (μ¯) of specimen. Both the inception time (TBR) of the instability in the running-in process and the inception time (TBS) of the instability arising in specimen's base material are governed by the average value (SR¯) of SR. The wavinesses of raceway are the controlling factor for the significant rise of frictional torque in the running-in regime and the TBR value. The fluctuations of frictional torque arising at the time behind TBR are confirmed to be the instability arising in the base material. The theoretical prediction for TBS is determined when μ¯ reaches the threshold value, (μ¯)threshold. For the specimens with the same GF, increasing (Ra)inner can elevate SR¯ and μ¯. In the specimens with a relatively smaller (Ra)inner, GF is the dominant factor for SR¯; however, (Ra)inner becomes the dominant factor for SR¯ if the inner raceway is prepared with a relatively larger (Ra)inner. Increasing GF can result in a μ¯ reduction, irrespective of the (Ra)inner value. Both TBS and TBR are reduced by the increasing SR¯. The wear losses of ball and the two raceways, however, increase as increasing SR¯.

UR - http://www.scopus.com/inward/record.url?scp=85045180709&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045180709&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2018.03.006

DO - 10.1016/j.wear.2018.03.006

M3 - Article

AN - SCOPUS:85045180709

VL - 406-407

SP - 126

EP - 139

JO - Wear

JF - Wear

SN - 0043-1648

ER -