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Influences of impulse excitation and vibration on thermoelastohydrodynamic characteristics of spur gear drive
Author(s) -
Huang Xingbao,
Yang Bintang,
Wang Youqiang,
Zhou Changjiang
Publication year - 2020
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.1503
Subject(s) - impulse (physics) , vibration , materials science , entrainment (biomusicology) , mechanics , acoustics , impulse response , excitation , physics , engineering , mathematics , classical mechanics , electrical engineering , mathematical analysis , rhythm
Abstract In this paper, an elastohydrodynamic impact model is proposed, and the prediction of lubricating film performance considering squeeze effect and thermal effect is presented. Effects of sinusoidal impulse load, sinusoidal impulse entrainment velocity, multi‐frequency vibration, and acoustic noise on thermo‐mechanical characteristics of gear lube are numerically investigated. Results show that both sinusoidal impulse load and sinusoidal impulse entrainment velocity can cause remarkable increases in central film thickness and minimum film thickness and induce small reduction in friction coefficient. The sinusoidal impulse load causes considerable increase in central film pressure; however, the sinusoidal impulse entrainment velocity induces significant decrease in central film pressure. The multiple high constant frequency vibration causes considerable increment in film pressure, but maintains small fluctuation in film thickness. Additionally, the consequence of multiple high constant frequency vibration induces evident reduction in friction coefficient.