Results 91 to 100 of about 2,255 (235)
Study on Influence of Spalling Fault Evolution on Meshing Stiffness of Spur Gear
Jixie chuandong, 2021 As a key transmission mechanism in mechanical equipment，in the meshing transmission process of involute spur gears，under the influence of extreme working conditions，the tooth surface is easy to cause spalling defects，change the meshing rigidity of gear ...
Peng Dai +5 more
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Advanced Face Gear Surface Durability Evaluations [PDF]
The surface durability life of helical face gears and isotropic super-finished (ISF) face gears was investigated. Experimental fatigue tests were performed at the NASA Glenn Research Center. Endurance tests were performed on 10 sets of helical face gears
Heath, Gregory F., Lewicki, David G.
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Research of the Torsion Stiffness of Involute Gear Transmission
Jixie chuandong, 2017 The gear stiffness calculation has important significance for the study of noise and vibration of power transmission system. Based on the finite element calculation of the software Abaqus,the torsional mesh stiffness of spur gear with involute profile is
Zhou Xin +3 more
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NASA transmission research and its probable effects on helicopter transmission design [PDF]
Transmissions studied for application to helicopters in addition to the more conventional geared transmissions include hybrid (traction/gear), bearingless planetary, and split torque transmissions. Research is being performed to establish the validity of
Coy, J. J. +2 more
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The use of formal numerical optimization methods for the design of gears is investigated. To achieve this, computer codes were developed for the analysis of spur gears and spiral bevel gears. These codes calculate the life, dynamic load, bending strength,
Chen, Xiang +2 more
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OPTIMAL DESIGN OF MODIFIED SPUR GEARS BASED ON MINIMUM FLASH TEMPERATURE
Jixie qiangdu, 2017 Considering the installation error and tooth flank clearance of modified involute cylindrical gears influencing on load density,oil film thickness,and local friction coefficient.an optimum design method based on the minimum flash temperature was proposed.
YU DongYang +3 more
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Bio-inspiration from the Issus Nymph gear − strength analysis
Mechanics & IndustryPlanthoppers are champion jumpers. Adult specimens are propelled by rapid movements of the hind legs, which can launch them a horizontal distance of 1.1 m with a take-off speed of 5.5 m/s, demonstrating high power output.
Guilbert Bérengère +5 more
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Computational gearing mechanics [PDF]
This is an expository report summarizing the research efforts and results under NASA Grant NSG-3188 to the University of Cincinnati. Since the grant has now ended this report also serves as a final report for the grant. The focus of the research has been
Huston, Ronald L.
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THE LOGARITHMIC SPIRAL AND ITS SPHERICAL COUNTERPART
Journal of Industrial Design and Engineering Graphics, 2019 Logarithmic spirals are isogonal trajectories of pencils of lines. From a series of geometric consequences, we pick out a few which are relevant for kinematics: When a logarithmic spiral rolls on a line, its asymptotic point traces a straight line. Hence,
Hellmuth STACHEL +2 more
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Technological Aspects of Manufacturing and Control of Gears-Review. [PDF]
Materials (Basel), 2023 Boral P, Gołębski R, Kralikova R.
europepmc +1 more source