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TECHNICAL PAPERS

Elastohydrodynamics of a Worm Gear Contact

[+] Author and Article Information
S. Kong, K. Sharif, H. P. Evans, R. W. Snidle

School of Engineering, Cardiff University, CF2 3TA, United Kingdome-mail: snidler@cf.ac.uk

J. Tribol 123(2), 268-275 (Jun 16, 2000) (8 pages) doi:10.1115/1.1308003 History: Received February 08, 2000; Revised June 16, 2000
Copyright © 2001 by ASME
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References

Figures

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Wheel tooth showing contours of undeformed gap/μm between worm and wheel teeth (a) conjugate case; (b) hob oversize case
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Dry contact areas at different points within the meshing cycle
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Pressure distribution for dry contact midway through the meshing cycle
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Results of EHL analysis for case 1 at first 14 point of the meshing cycle: (a) pressure surface; (b) film thickness contours/μm (inlet is on the left)
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Temperature contours/°C from EHL solution for case 1: (a) mid-film oil temperature; (b) worm surface temperature; (c) wheel surface temperature
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Results of EHL analysis for case 2 at second 1/4 point of the meshing cycle: (a) pressure surface; (b) film thickness contours/μm (inlet is on the left)
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Temperature contours/°C from EHL solution for case 2: (a) mid-film oil temperature; (b) worm surface temperature; (c) wheel surface temperature
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Results of EHL analysis for case 3 at third 1/4 point of the meshing cycle: (a) pressure surface; (b) film thickness contours/μm (inlet is on the left)
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Temperature contours/°C from EHL solution for case 3: (a) mid-film oil temperature; (b) worm surface temperature; (c) wheel surface temperature
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Area of dry elastic contact for case 2 showing entrainment velocity vectors
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Line of predicted poor film generation for cases 1, 2, and 3

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