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Dynamic capacity and surface fatigue life for spur and helical gearsA mathematical model for surface fatigue life of gear, pinion, or entire meshing gear train is given. The theory is based on the statistical approach used by Lundberg and Palmgren for rolling-element bearings. Also equations are presented which give the dynamic capacity of the gear set. The dynamic capacity is the transmitted tangential load which gives a 90 percent probability of survival of the gear set for one million pinion revolutions. The analytical results were compared with test data for a set of AISI 9310 spur gears operating at a maximum Hertz stress of 1.71 billion N per sq m (248,000 psi) and 10,000 rpm. The theoretical life predictions were very good when material constants obtained from rolling-element bearing tests were used in the gear life model.
Document ID
19760031905
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Coy, J. J.
(U.S. Army, Air Mobility Research and Development Laboratory, Cleveland Ohio, United States)
Townsend, D. P.
(Army Air Mobility Research and Development Lab. Cleveland, OH, United States)
Zaretsky, E. V.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 8, 2013
Publication Date
October 1, 1975
Subject Category
Mechanical Engineering
Report/Patent Number
ASME PAPER 75-LUB-19
Meeting Information
Meeting: Joint Lubrication Conference
Location: Miami Beach, FL
Start Date: October 21, 1975
End Date: October 23, 1975
Sponsors: American Society of Mechanical Engineers and American Society of Lubrication Engineers
Accession Number
76A14871
Distribution Limits
Public
Copyright
Other

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