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Evaluation of high-contact-ratio spur gears with profile modification (Document No: 19790023433)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Baber, B. B. Towsend, D. P. Nagy, A. |
| Copyright Year | 1979 |
| Description | Scoring tests, surface fatigue tests, and single-tooth bending fatigue tests were conducted with four sets of spur gears of standard design and three sets of spur gears of new-tooth-form design. The new-tooth-form and standard gears scored at approximately the same gear bulk temperature of 409 K (277 F). The scoring load for the new-tooth-form gears was 22 percent less than that for the standard gears. The pitting fatigue lives of the standard and new-tooth-form gears were statistically equal for equal Hertz stress, while the surface fatigue life of the nw-tooth-form gears was approximately five times that of the standard gears at the same load. The standard gears failed at a 17 percent higher bending stress than the new-tooth-form gears when stress was calculated by the AGMA method. However, the difference is not statistically significant. The standard gears failed at a tooth load 1.9 times that for the new-tooth-form gears. |
| File Size | 1223037 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790023433 |
| Archival Resource Key | ark:/13960/t81k46s0g |
| Language | English |
| Publisher Date | 1979-09-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Fatigue Tests Stress Analysis Gears Bending Fatigue Gear Teeth Fatigue Materials Surface Properties Contact Potentials Revisions Design Analysis Mechanical Drives Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
