Performance enhancement of normal contact ratio gearing system through correction factor
DOI:
https://doi.org/10.15282/jmes.13.3.2019.03.0429Keywords:
Correction factor, Finite element analysis, Performance, Root stress, Spur gear driveAbstract
As lined, higher transmission ratio drives system will have uneven stresses in the root region of the pinion and wheel. To enrich this agility of uneven stresses in normal-contact ratio (NCR) gearing system, an enhanced system is desirable to be industrialized. To attain this objective, it is proposed to put on the idea of modifying the correction factor in such a manner that the bending strength of the gearing system is improved. In this work, the correction factor is modified in such a way that the stress in the root region is equalized between the pinion and wheel. This equalization of stresses is carried out by providing a correction factor in three circumstances: in pinion; wheel and both the pinion and the wheel. Henceforth performances of this S+, S0 and S- drives are evaluated in finite element analysis (FEA) and compared for balanced root stresses in parallel shaft spur gearing systems. It is seen that the outcomes gained from the modified drive have enhanced performance than the standard drive.
References
Gunay D, Ozer H, Aydemir L. The effects of addendum modification coefficient on tooth stresses of spur gear. Mathematical & Computational Applications. 1996;1(1): 36-43.
Chernets MV, Yarema RY, Chernets Y. M. A method for the evaluation of the influence of correction and wear of the teeth of a cylindrical gear on its durability and strength. Part 1. Service life and wear. Material Science. 2012;3:289–300.
Chernets MV, Yarema RY. On the problem of the evaluation of the influence of correction of teeth of a cylindrical involute helical gear on its contact strength. Probl. Tribol. 2011;4:26–32.
Shuting L. Effects of machining errors, assembly errors and tooth modifications on load-carrying capacity, load-sharing rate and transmission error of a pair of spur gear. Mechanism and Machine Theory. 2007;42:698–726.
Shuting L. Effects of misalignment error, tooth modifications and transmitted torque on tooth engagements of a pair of spur gears. Mechanism and Machine Theory. 2015;83:125-136.
Prabhu SR, Muthuveerappan G. A Balanced Maximum Root stresses on Normal Contact Ratio Spur Gears to Improve the Load Carrying Capacity through Non-Standard Gears. Mechanics based design of structure and machines, Taylor and Francis. 2015;43:150-163.
Pedrero JI, Pleguezuelos M, Artés M, Antona JA. Load distribution model along the line of contact for involute external gears. Mechanism and Machine Theory. 2010;45(5) :780–794.
Kapelevich AL, Shekhtman YV. Direct gear design: bending stress minimization. Gear Technology. 2003;20(5):44–47.
Pedersen NL. Reducing bending stress in external spur gears by redesign of the standard cutting tool. Structural and Multidisciplinary Optimization. 2009;38(3):215–227.
Ravivarman R, Palaniradja K, Prabhu SR. Evolution of balanced root stress and tribological properties in high contact ratio spur gear drive. Mechanism and Machine Theory. 2018;126:491–513.
Tunalioglu MS. A Research of Tooth Profile Damages in Internal Gears. Gazi University Institute of Science and Technology, Ankara. 2011:1-5.
Tunalioglu MS, Tuc B. Theoretical and experimental investigation of wear in internal gears. Wear. 2014;309:208-215.
Prabhu SR, Sathishkumar R. Enhancement of Wear Resistance on Normal Contact Ratio Spur Gear Pairs through Non-Standard Gears. Wear. 2017;380-381:228-239.
Schaffner T, Allmaier H, Girstmair J, Reich FM, Tangasawi O. Investigating the efficiency of automotive manual gearboxes by experiment and simulation. Proceedings of the Institution of Mechanical Engineers Part K-Journal of Multi-Body Dynamics. 2014;228(4):341–354.
Xu H, Kahraman A, Anderson N, Maddock, D. Prediction of Mechanical Efficiency of Parallel-axis Gear Pairs. ASME, Journal of Mechanical Design. 2007;129:58– 68.
Wang C, Cui HY, Zhang QP, Wang WM. An approach of calculation on sliding friction power losses in involute helical gears with modification. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 2016;230(9):1521–1531.
Mihailidis A, Athanasopoulos E. EHL film thickness and load dependent power loss of cycloid reducers. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 2016;230(7-8):1303–1317.
Flodin A, Andersson S. Simulation of mild wear in spur gears. Wear. 1997;207:16–23.
Anderson NE, Loewenthal. Part and Full Load Spur Gear Efficiency. NASATP-1622, AVRADCOM. 1979.
Hamrock BJ, Dowson O. Isothermal Elastohydrodynamic Lubrication of Point Contacts, Fully Flooded Results. Journal of Lubrication Technology. 1977;99:264-276.
Cheng, HS. Prediction of film thickness and sliding frictional coefficient in elastohydrodynamic contacts. In: Design engineering technology conference, American Society of Mechanical Engineers, Evanston, USA, September. 1974:286–293.
Andersson S, Eriksson B. Prediction of the sliding wear of spur gears. Proceedings of NORDTRIB. 1990;90.
Thirumurugan R, Muthuveerappan G. Critical loading points for maximum fillet and contact stresses in normal and high contact ratio spur gears based on load sharing ratio. Mechanics Based Design of Structures and Machines. 2011;1:118–141.
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