Accession Number : ADA254358


Title :   Optimal Design of Compact Spur Gear Reductions


Descriptive Note : Technical memorandum,


Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMIN LANGLEY RESEARCH CENTER HAMPTON VA


Personal Author(s) : Savage, M ; Lattime, S B ; Kimmel, J A ; Coe, H H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254358.pdf


Report Date : Sep 1992


Pagination or Media Count : 10


Abstract : The optimal design of compact spur gear reductions includes the selection of bearing and shaft proportions in addition to the gear mesh parameters. Designs for single mesh spur gear reductions are based on optimization of system life, system volume and system weight including gears, support shafts and the four bearings. The overall optimization allows component properties to interact, yielding the best composite design. A modified feasible directions search algorithm directs the optimization through a continuous design space. Interpolated polynomials expand the discrete bearing properties and proportions into continuous variables for optimization. After finding the continuous optimum, the designer can analyze near optimal designs for comparison and selection. Design examples show the influence of the bearings on the optimal configurations.


Descriptors :   *TRANSMISSION GEARS , COMPUTER PROGRAMS , VOLUME , OPTIMIZATION , FATIGUE LIFE , PARAMETERS , COMPARISON , MESH , REDUCTION , GEAR TEETH , CONFIGURATIONS , WEIGHT , FATIGUE(MECHANICS) , SHAFTS(MACHINE ELEMENTS) , BEARINGS , SELECTION , GEARS


Subject Categories : Machinery and Tools


Distribution Statement : APPROVED FOR PUBLIC RELEASE