抄録
HAMROCK and DOWSON have developed a simplified expression for influences of ellipticity parameter, dimensionless speed, load, and material parameters on minimum film thickness. However, EHRET shows that his numerical results by using multilevel method have a large difference as compared with the simplified expression under point contact (a ball on a plate configuration). This paper developed a new simplified expression. The influence of the ellipticity parameter, the dimensionless speed, load, and material parameters on minimum film thickness was investigated from low pressure level (0.35 GPa) to high pressure level (3.43 GPa). The ellipticity parameter was varied from one to eight. The dimensionless speed parameter was varied over a large range. The dimensionless load parameter was varied over a range of four orders of magnitude. Conditions corresponding to the use of solid materials of bronze, steel, and silicon nitride and lubrications of paraffinic and naphthenic mineral oils were considered for the dimensionless material parameter. Four hundred different cases were calculated for the new simplified expression.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 138-147 |
| ページ数 | 10 |
| ジャーナル | Toraibarojisuto/Journal of Japanese Society of Tribologists |
| 巻 | 52 |
| 発行部数 | 2 |
| 出版物ステータス | Published - 2007 |
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ASJC Scopus subject areas
- Mechanical Engineering
これを引用
Analysis on minimum oil film thickness of EHL elliptical contacts by using multilevel methods. / Yoshida, Takafumi; Tozaki, Yasuyoshi; Matsumoto, Susumu.
：: Toraibarojisuto/Journal of Japanese Society of Tribologists, 巻 52, 番号 2, 2007, p. 138-147.研究成果: Article
}
TY - JOUR
T1 - Analysis on minimum oil film thickness of EHL elliptical contacts by using multilevel methods
AU - Yoshida, Takafumi
AU - Tozaki, Yasuyoshi
AU - Matsumoto, Susumu
PY - 2007
Y1 - 2007
N2 - HAMROCK and DOWSON have developed a simplified expression for influences of ellipticity parameter, dimensionless speed, load, and material parameters on minimum film thickness. However, EHRET shows that his numerical results by using multilevel method have a large difference as compared with the simplified expression under point contact (a ball on a plate configuration). This paper developed a new simplified expression. The influence of the ellipticity parameter, the dimensionless speed, load, and material parameters on minimum film thickness was investigated from low pressure level (0.35 GPa) to high pressure level (3.43 GPa). The ellipticity parameter was varied from one to eight. The dimensionless speed parameter was varied over a large range. The dimensionless load parameter was varied over a range of four orders of magnitude. Conditions corresponding to the use of solid materials of bronze, steel, and silicon nitride and lubrications of paraffinic and naphthenic mineral oils were considered for the dimensionless material parameter. Four hundred different cases were calculated for the new simplified expression.
AB - HAMROCK and DOWSON have developed a simplified expression for influences of ellipticity parameter, dimensionless speed, load, and material parameters on minimum film thickness. However, EHRET shows that his numerical results by using multilevel method have a large difference as compared with the simplified expression under point contact (a ball on a plate configuration). This paper developed a new simplified expression. The influence of the ellipticity parameter, the dimensionless speed, load, and material parameters on minimum film thickness was investigated from low pressure level (0.35 GPa) to high pressure level (3.43 GPa). The ellipticity parameter was varied from one to eight. The dimensionless speed parameter was varied over a large range. The dimensionless load parameter was varied over a range of four orders of magnitude. Conditions corresponding to the use of solid materials of bronze, steel, and silicon nitride and lubrications of paraffinic and naphthenic mineral oils were considered for the dimensionless material parameter. Four hundred different cases were calculated for the new simplified expression.
KW - Elastohydrodynamic lubrication
KW - Elliptical contacts
KW - Minimum oil film thickness
KW - Multilevel methods
KW - Numerical analysis
UR - http://www.scopus.com/inward/record.url?scp=34247140506&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247140506&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:34247140506
VL - 52
SP - 138
EP - 147
JO - Toraibarojisuto/Journal of Japanese Society of Tribologists
JF - Toraibarojisuto/Journal of Japanese Society of Tribologists
SN - 0915-1168
IS - 2
ER -