Effect of Drive Side Contact Ratio on Direct Design Asymmetric High Contact Ratio Spur Gear Based on Load Sharing

Abstract:

The aim of this paper is to determine the effect on direct design asymmetric high contact ratio spur gear based on tooth load sharing. A unique Ansys parametric design language code is developed for this study. The load sharing based bending and contact stresses are determined for different drive side contact ratios. In addition to that the location of critical loading point is determined. Because the critical loading point for high contact ratio spur gear not lies on fixed point like normal contact ratio spur gears namely highest point of single tooth contact. In conclusion an increase in drive side contact ratio leads to increase in the load sharing based bending stress and decrease in the contact stress at the critical loading point.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 2292-2296
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.2292
• Online since: July 2014
• Authors: P. Marimuthu*, G. Muthuveerappan
• Keywords: Asymmetric Spur Gear, Bending Stress, Contact Stress, Direct Design, High Contact Ratio, Load Sharing Ratio

References

[1] A. L. Kapelevich, Geometry and design of involute spur gears with asymmetric teeth, Mechanism and Machine theory, 35 (2000) 117-130.

DOI: 10.1016/s0094-114x(99)00002-6

[2] A.H. Elkholy, Tooth load sharing in high contact ratio spur gears, ASME, Journal of Mechanisms, Transmissions, and Automation in Design 107 (1985) 11–16.

DOI: 10.1115/1.3258674

[3] C. H. Liou, H. H. Lin, F. B. Oswald and D. P. Townsend, Effect of contact ratio on spur gear dynamic load with no tooth profile modifications. Journal of Mechanical Design 118 (1996) 439–443.

DOI: 10.1115/1.2826905

[4] S. C. Mohanty, Tooth Load Sharing and Contact Stress Analysis of High Contact Ratio Spur Gears in Mesh. IE (I) Journal 84 (2002) 66-70.

[5] J. Wang and I. Howard, The torsional stiffness of involute spur gears, IMECE, Journal of Mechanical Engineering Science, 218 (2004) 131–142.

DOI: 10.1243/095440604322787009

[6] D. V. Muni, V. SenthilKumar and G. Muthuveerappan, Optimization of Asymmetric Spur Gear Derives for Maximum Bending Strength Using Direct Gear Design Method, Mechanics based design of structures and machines, 35 (2007) 127-145.

DOI: 10.1080/15397730701196637

[7] R. Thirumurugan and G. Muthuveerappan, Critical loading points for maximum fillet and contact stresses in normal and high contact ratio spur gears based on load sharing, Mechanics Based Design of Structures and Machines, 39 (2011) 118-141.

DOI: 10.1080/15397734.2011.540488