Author: Monsak PimsarnPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Tooth Profile Modifications for Optimum Dynamic Load in Spur Gears Based on Pseudo-interference Stiffness Estimation Method
Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conferences--2005
Author: Publisher:
ISBN:
Category : Computer-aided design
Languages : en
Pages : 578
Book Description
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 794
Book Description
Dynamic Loading of Spur Gears with Linear Or Parabolic Tooth Profile Modifications
Author: Hsiang Hsi LinPublisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
A computer simulation was conducted to investigate the effects of both linear and parabolic tooth profile modification on the dynamic response of low-contact-ratio spur gears. The effect of the total amount of modification and the length of the modification zone were studied at various loads and speeds to find the optimal profile modification for minimal dynamic loading. Design charts consisting of normalized maximum dynamic load curves were generated for gear systems operated at various loads and with different tooth profile modification. An optimum profile modification can be determined from these design charts to minimize the dynamic loads of spur gear systems. Keywords: Spur gears, Gear teeth, Gear noise, Gearboxes, Dynamic load, Profile modification, Transmission error, Gear design. (SDW).
Proceedings of the ... ASME Design Engineering Technical Conferences
Author: Publisher:
ISBN:
Category : Computer-aided design
Languages : en
Pages : 580
Book Description
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).
Influence of Tooth Profile Modification on Spur Gear Dynamic Tooth Strain
Author: Fred B. OswaldDynamic Tooth Loads and Stressing for High Contact Ratio Spur Gears
Author: R. W. CornellPublisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
An analysis and computer program has been developed for calculating the dynamic gear tooth loading and root stressing for HCRG as well as LCRG. The analysis includes the effects of the variable tooth stiffness during the mesh, tooth-profile modification, and gear errors. The calculation of the tooth root stressing caused by the dynamic gear loads is based on a modified Heywood gear tooth stress analysis, which appears more universally applicable to both LCRG and HCRG. The computer program is presently being expanded to calculate the tooth contact stressing and PV values.
Evaluation of High-contact-ratio Spur Gears with Profile Modification
Author: Dennis P. TownsendPublisher:
ISBN:
Category : Gearing, Spur
Languages : en
Pages : 26
Book Description
Influence of Linear Profile Modification and Loading Conditions on the Dynamic Tooth Load and Stress of High Contact Ratio Gears
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
This paper presents a computer simulation for the dynamic response of high-contact-ratio spur gear transmissions. High contact-ratio spur gear transmissions. High contact ratio gears have the potential to produce lower dynamic tooth loads and minimum root stress but they can be sensitive to tooth profile errors. The analysis presented in this paper examines various profile modifications under realistic loading conditions. The effect of these modifications on the dynamic load (force) between mating gear teeth and the dynamic root stress is presented. Since the contact stress is dependent on the dynamic load, minimizing dynamic loads will also minimize contact stresses. This paper shows that the combination of profile modification and the applied load (torque) carried by a gear system has a significant influence on gear dynamics. The ideal modification at one value of applied load will not be the best solution for a different load. High-contact-ratio gears were found to require less modification than standard low-contact-ratio gears.