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The Bending and Surface Contact Stress Variations in a Mating Plastic Gear Pair

[+] Author Affiliations
Ah-Der Lin

Cheng Shiu University, Kaohsiung, Taiwan

Jao-Hwa Kuang

National Sun Yat-Sen University, Kaohsiung, Taiwan

Paper No. DETC2007-34470, pp. 263-271; 9 pages
doi:10.1115/DETC2007-34470
From:
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 7: 10th International Power Transmission and Gearing Conference
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4808-6 | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME

abstract

A dynamic model of an engaging spur gear pair is proposed to study the distributions and variation of bending and surface contact stresses around the fillet and contacting points for plastic gears. The parameters used in this dynamic model include time-varying mesh stiffness, frictional coefficient, and profile-shifted factor, etc. Due to high sensitivity to heat for plastic material, the influence of temperature on plastic gears has also been taken into consideration in this work. A computational algorithm is developed to simulate the variation of fillet bending and surface contact stresses during the engagement with different speeds. The results indicate that the operating temperature may affect the distribution and the magnitude of bending and surface contact stresses of a plastic gear pair significantly.

Copyright © 2007 by ASME
Topics: Stress , Plastic gears

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