This paper presents results of a comprehensive experimental and theoretical study to determine the influence of certain key factors in planetary transmissions on gear stresses and planetary load sharing. A series of tests are conducted on a family of planetary gear sets, and strains are recorded at various locations on the outer diameter and gear tooth fillet of the ring gear. Pinion position errors are introduced as a representative key manufacturing tolerance, and the resultant changes in the planetary behavior are observed. The experimental data is compared to the predictions of a state-of-the-art multi-body contact analysis model — ‘Gear System Analysis Modules’ (GSAM). This model is capable of including the influences of a number of system-level variables and quantifying their impact on gear strains. The model predictions are shown to compare well with the measured strain at the ring gear outer diameter and tooth fillet. GSAM predictions of planet load sharing are then used to quantify the influence of pin hole position errors on the 3, 4, 5, and 6 planet test gear sets. These predictions also agree well with the planet load sharing experiments presented in a companion paper [20].
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ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 4–7, 2007
Las Vegas, Nevada, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4808-6
PROCEEDINGS PAPER
Internal Gear Strains and Load Sharing in Planetary Transmissions: Model and Experiments
Avinash Singh,
Avinash Singh
General Motors Corporation, Wixom, MI
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Ahmet Kahraman,
Ahmet Kahraman
Ohio State University, Columbus, OH
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Haris Ligata
Haris Ligata
Ohio State University, Columbus, OH
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Avinash Singh
General Motors Corporation, Wixom, MI
Ahmet Kahraman
Ohio State University, Columbus, OH
Haris Ligata
Ohio State University, Columbus, OH
Paper No:
DETC2007-35047, pp. 917-928; 12 pages
Published Online:
May 20, 2009
Citation
Singh, A, Kahraman, A, & Ligata, H. "Internal Gear Strains and Load Sharing in Planetary Transmissions: Model and Experiments." Proceedings of the ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 7: 10th International Power Transmission and Gearing Conference. Las Vegas, Nevada, USA. September 4–7, 2007. pp. 917-928. ASME. https://doi.org/10.1115/DETC2007-35047
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