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

doi:10.1016/j.wear.2018.03.006

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

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

5 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 (T_BR) of the instability in the running-in process and the inception time (T_BS) 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 T_BR value. The fluctuations of frictional torque arising at the time behind T_BR are confirmed to be the instability arising in the base material. The theoretical prediction for T_BS 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 T_BS and T_BR are reduced by the increasing SR¯. The wear losses of ball and the two raceways, however, increase as increasing SR¯.

Original language	English
Pages (from-to)	126-139
Number of pages	14
Journal	Wear
Volume	406-407
DOIs	https://doi.org/10.1016/j.wear.2018.03.006
Publication status	Published - 2018 Jul 15

All Science Journal Classification (ASJC) codes

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

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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}",

note = "Funding Information: This work was financially supported by HIWIN Technologies Corporation and the Ministry of Science and Technology, Taiwan, R.O.C. , under grant MOST 104-2622-E-150-002-CC2 . Publisher Copyright: {\textcopyright} 2018 Elsevier B.V. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "2018",

month = jul,

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 journal › Article › peer-review

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

N1 - Funding Information: This work was financially supported by HIWIN Technologies Corporation and the Ministry of Science and Technology, Taiwan, R.O.C. , under grant MOST 104-2622-E-150-002-CC2 . Publisher Copyright: © 2018 Elsevier B.V. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

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¯.

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U2 - 10.1016/j.wear.2018.03.006

DO - 10.1016/j.wear.2018.03.006

M3 - Article

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VL - 406-407

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JO - Wear

JF - Wear

SN - 0043-1648

ER -

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

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