Temperature distribution in teeth and blanks of ultra-high-speed gears (2nd report, calculation of temperature distribution in teeth and blanks)

Citation
Y. Tozaki et al., Temperature distribution in teeth and blanks of ultra-high-speed gears (2nd report, calculation of temperature distribution in teeth and blanks), JSME C, 44(1), 2001, pp. 210-216
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING
ISSN journal
1344-7653 → ACNP
Volume
44
Issue
1
Year of publication
2001
Pages
210 - 216
Database
ISI
SICI code
1344-7653(200103)44:1<210:TDITAB>2.0.ZU;2-E
Abstract
Currently in industries, high-speed turbo machineries such as compressors a nd steam or gas turbines are required to have increased power capacities. D ue to this, a large gear size is required which leads to nonuniform tempera ture distribution. As the result of nonuniform temperature distribution, no nuniform thermal distortion occurs. Change in load distribution due to this thermal distortion is considered to be closely related to scoring and pitt ing failures. In order to ensure reliability of high-speed gear units, it i s necessary to improve the following techniques. (1) The method of predicti ng the temperature rise of gears and thermal distortion. ( 2) Tooth correct ion against thermal distortion. In this paper, a three-dimensional model fo r calculating the temperature of teeth surfaces and blanks is presented. Th is model includes the effects of convective cooling bg lubricating oil and the change ill load distribution due ii mechanical deformation. The calcula ted results of gear teeth temperature and bending stress are in reasonable agreement with the experimental results. It is confirmed that the analytica l method is practical and useful.