Tooth surface modifications are small, micron-level intentional deviations from perfect involute geometries of spur and helical gears. Such modifications are aimed at improving contact pressure distribution, while minimizing the motion transmission error to reduce noise excitations. In actual practice, optimal modification requirements vary with the operating torque level, misalignments, and manufacturing variance. However, most gear literature has been concerned with determining optimal flank form modifications at a single design point, represented by fixed, single load and misalignment values. A new approach to the design of tooth surface modifications is proposed to handle such conditions. The problem is formulated as a robust design optimization problem, and it is solved, in conjunction with an efficient gear contact solver (LDP), by a direct search, global optimization algorithm aimed at guaranteeing global optimality of the obtained micro-geometry solutions. Several tooth surface modifications can be used as micro-geometry design variables, including profile, lead, and bias modifications. Depending on the contact solver capabilities, multiple performance metrics can be considered. The proposed method includes the capability of simultaneously and robustly handling several conflicting design objectives. In the present paper, peak contact stress and loaded transmission error amplitude are used as objective functions (to be minimized). At the end, two example optimizations are presented to demonstrate the effectiveness of the proposed method.
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ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 4–7, 2013
Portland, Oregon, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5592-8
PROCEEDINGS PAPER
Robust Optimization of Cylindrical Gear Tooth Surface Modifications Within Ranges of Torque and Misalignments Available to Purchase
Alessio Artoni,
Alessio Artoni
University of Pisa, Pisa, Italy
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Massimo Guiggiani,
Massimo Guiggiani
University of Pisa, Pisa, Italy
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Ahmet Kahraman,
Ahmet Kahraman
The Ohio State University, Columbus, OH
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Jonny Harianto
Jonny Harianto
The Ohio State University, Columbus, OH
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Alessio Artoni
University of Pisa, Pisa, Italy
Massimo Guiggiani
University of Pisa, Pisa, Italy
Ahmet Kahraman
The Ohio State University, Columbus, OH
Jonny Harianto
The Ohio State University, Columbus, OH
Paper No:
DETC2013-12222, V005T11A022; 10 pages
Published Online:
February 12, 2014
Citation
Artoni, A, Guiggiani, M, Kahraman, A, & Harianto, J. "Robust Optimization of Cylindrical Gear Tooth Surface Modifications Within Ranges of Torque and Misalignments." Proceedings of the ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 5: 25th International Conference on Design Theory and Methodology; ASME 2013 Power Transmission and Gearing Conference. Portland, Oregon, USA. August 4–7, 2013. V005T11A022. ASME. https://doi.org/10.1115/DETC2013-12222
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