Influence of Manufacturing Error Tolerances on Thermal EHL Behavior of Gears
Hjelm, Rikard LU and Wahlström, Jens LU
(2022)
In Lubricants
10(11).
- Abstract
Due to the electrification of vehicles, new demands are being imposed on gears, which translates to the tolerances of manufacturing errors. However, not many studies treat the impact of manufacturing error combinations on the lubricant behavior of gear sets. Therefore, a simulation method is developed, including its derivation, discretization, and implementation. The method solves the thermal elasto-hydrodynamic lubrication (TEHL) problem, taking into account the varying temperature, viscosity, density, and cavitation of the lubricant. To account for manufacturing errors, the load distribution from a loaded tooth contact analysis (LTCA), developed by the authors, is used as input to the TEHL method. Comparison is made with a standard... (More)
Due to the electrification of vehicles, new demands are being imposed on gears, which translates to the tolerances of manufacturing errors. However, not many studies treat the impact of manufacturing error combinations on the lubricant behavior of gear sets. Therefore, a simulation method is developed, including its derivation, discretization, and implementation. The method solves the thermal elasto-hydrodynamic lubrication (TEHL) problem, taking into account the varying temperature, viscosity, density, and cavitation of the lubricant. To account for manufacturing errors, the load distribution from a loaded tooth contact analysis (LTCA), developed by the authors, is used as input to the TEHL method. Comparison is made with a standard load distribution assumption, and a numerical example is used to show some preliminary results. The results show good agreement with results from other studies. It is shown that there is a great effect of manufacturing errors on the TEHL behavior, such as temperature, due to the change in load distribution such errors impose. It can be concluded that manufacturing errors of different tolerances have a great impact and that they should therefore be taken into consideration when analyzing gear set behavior and constructing gear sets for new applications.
(Less)
- author
- Hjelm, Rikard
LU
and Wahlström, Jens
LU
- organization
- publishing date
- 2022-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- cavitation, electrification, LTCA, manufacturing error, pitch error, profile slope error, simulation, TEHL, thermal EHL
- in
- Lubricants
- volume
- 10
- issue
- 11
- article number
- 323
- publisher
- MDPI AG
- external identifiers
-
- scopus:85149062418
- ISSN
- 2075-4442
- DOI
- 10.3390/lubricants10110323
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: This research was funded by the VINNOVA projects TED—Transmission components for Electrified Drivelines (grant number 2019-02630)—and E!115140 Effigears (grant number 2021-00974). Publisher Copyright: © 2022 by the authors.
- id
- 40058b60-025e-4a1c-abec-cf0d53745d7b
- date added to LUP
- 2023-03-18 20:15:03
- date last changed
- 2023-03-20 10:13:55
@article{40058b60-025e-4a1c-abec-cf0d53745d7b,
abstract = {{<p>Due to the electrification of vehicles, new demands are being imposed on gears, which translates to the tolerances of manufacturing errors. However, not many studies treat the impact of manufacturing error combinations on the lubricant behavior of gear sets. Therefore, a simulation method is developed, including its derivation, discretization, and implementation. The method solves the thermal elasto-hydrodynamic lubrication (TEHL) problem, taking into account the varying temperature, viscosity, density, and cavitation of the lubricant. To account for manufacturing errors, the load distribution from a loaded tooth contact analysis (LTCA), developed by the authors, is used as input to the TEHL method. Comparison is made with a standard load distribution assumption, and a numerical example is used to show some preliminary results. The results show good agreement with results from other studies. It is shown that there is a great effect of manufacturing errors on the TEHL behavior, such as temperature, due to the change in load distribution such errors impose. It can be concluded that manufacturing errors of different tolerances have a great impact and that they should therefore be taken into consideration when analyzing gear set behavior and constructing gear sets for new applications.</p>}},
author = {{Hjelm, Rikard and Wahlström, Jens}},
issn = {{2075-4442}},
keywords = {{cavitation; electrification; LTCA; manufacturing error; pitch error; profile slope error; simulation; TEHL; thermal EHL}},
language = {{eng}},
number = {{11}},
publisher = {{MDPI AG}},
series = {{Lubricants}},
title = {{Influence of Manufacturing Error Tolerances on Thermal EHL Behavior of Gears}},
url = {{http://dx.doi.org/10.3390/lubricants10110323}},
doi = {{10.3390/lubricants10110323}},
volume = {{10}},
year = {{2022}},
}