Author: M. OzkulPublisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
Dynamic Stress Prediction for Spur Gears Compared to Gear Rig Measurements
Author: M. OzkulThree Dimensional Finite Element Stress Predictions of Spur Gears Compared to Gear Fatigue Rig Measurements
Author: Martin OzkulA Comparison Between Theoretical Prediction and Experimental Measurement of the Dynamic Behaviour of Spur Gears
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
A comparison was made between computer model predictions of gear dynamic behaviour and experimental results. The experimental data were derived from the NASA near noise rig, which was used to record dynamic tooth loads and vibration. The experimental results were compared with predictions from the DSTO Aeronautical Research Laboratory's gear dynamics code for a matrix of 28 load- speed points. At high torque the peak dynamic load predictions agree with experimental results with an average error of 5 percent in the speed range 800 to 6000 rpm. Tooth separation (or bounce), which was observed in the experimental data for light-torque, high-speed conditions, was simulated by the computer model. The model was also successful in simulating the degree of load sharing between gear teeth in the multiple-tooth contact region.
Dynamic Forces in Spur Gears - Measurement, Prediction, and Code Validation
Author: Papers Presented at the AIAA/ASME/SAE/ASEE 25th Joint Propulsion Conference
Author: 87-2000-87-2047
Author: Predicted Effect of Dynamic Load on Pitting Fatigue Life for Low-contact-ratio Spur Gears
Author: David G. LewickiPublisher:
ISBN:
Category : Computer programs
Languages : en
Pages : 24
Book Description
How dynamic load affects the surface pitting fatigue life of external spur gears was predicted by using NASA computer program TELSGE. Parametric studies were performed over a range of various gear parameters modeling low-contact-ratio involute spur gears. In general, gear life predictions based on dynamic loads differed significantly from those based on static loads, with the predictions being strongly influenced by the maximum dynamic load during contact. Gear mesh operating speed strongly affected predicted dynamic load and life. Meshes operating at a resonant speed or one-half the resonant speed had significantly shorter lives. Dynamic life factors for gear surface pitting fatigue were developed on the basis of the parametric studies. In general, meshes with higher contact ratios had higher dynamic life factors than meshes with lower contact ratios. A design chart was developed for hand calculations of dynamic life factors. (Author).
NASA Technical Paper
Author: United States. National Aeronautics and Space AdministrationPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 20
Book Description
Author: 
Author: