1. Home
  2. Honda R&D Technical Review Vol.13 N...
  3. Application of Helical Gear Tooth-r...

Technical Review e-Book: Summary

Application of Helical Gear Tooth-root Bending Stress Simulation for Automotive Transmissions

Article of Honda R&D Technical Review Vol.13 No.1

Summary

This technique was adapted from Professor Aizoh Kubo’s program, which is capable of simulating tooth-root bending stress in helical gears, while taking into account the effects of misalignment and tooth surface configuration. A technique was created that is capable of more accurately simulating in a short time helical gear tooth-root bending stress in an actual automotive transmission during the first stages of design. The resulting tool was named GRANPLI. Misalignment in actual transmissions was measured using original gap sensors for a drive gear and driven gear behavior at low revolution speeds, and a misalignment map was created with respect to the loads. Particular attention was paid to the position of the primary reduction gear with respect to shaft orientation, the phase angle of the final reduction gear and the differential case, and so on. The appropriateness of calculation results obtained by GRANPLI was confirmed through comparison with data from measurements by strain gauges attached to a gear in an actual automotive transmission.

Reference

(1) Japan Society of Mechanical Engineers: Gear Strength Design Material, Tokyo, Japan Society of Mechanical Engineers, 1979, p. 205
(2) A. Kubo, K. Umezawa: Research on Load Transmission Characteristics of Cylindrical Gears with Deviation (1st Report, Basic Principles), Transactions of the Japan Society of Mechanical Engineers (3rd Dept.) Vol. 43, No. 371, p. 2771 – 2783 (1977-7)
(3) A. Kubo: Research on Load Transmission Characteristics of Cylindrical Gears with Deviation (2nd Report, The Effect of Gear Precision on Static Tooth-root Stress), Transactions of the Japan Society of Mechanical Engineers (3rd Dept.), Vol. 44, No. 378, p. 701 – 711 (1978-2)
(4) A. Kubo, T. Ueno, J. Jin, Y. Ariura, T. Nakanishi: Basic Research into Gear Tooth Contact and Gear Performance (1st Report, Basic Principles), Transactions of the Japan Society of Mechanical Engineers (C edition), Vol. 51, No. 467, p. 1559 – 1567 (1985-7)
(5) K. Umezawa, J. Ishikawa: Approach between Gear Teeth Due to Surface Contact, Transactions of the Japan Society of Mechanical Engineers (3rd Dept.) Vol. 38, No. 315, p. 2979 – 2987, (1972-11)
(6) K. Umezawa: Meshing Test on Helical Gears under Load Transmission (1st Report, Approximation Formula for Deflection ), Transactions of the Japan Society of Mechanical Engineers (3rd Dept.), Vol. 38, No. 308, p. 896 – 904 (1972-4)
(7) K. Umezawa: Meshing Test on Helical Gears under Load Transmission (2nd Report, Approximation Formula for Bending-Moment Distribution), Transactions of the Japan Society of Mechanical Engineers (3rd Dept.), Vol. 38, No. 310, p. 1602 – 1608 (1972-6)
(8) K. Umezawa: Meshing Test on Helical Gears under Load Transmission (3rd Report, The Static Behaviors of Driven Gear [sic]), Transactions of the Japan Society of Mechanical Engineers (3rd Dept.), Vol. 40, No. 330, p. 576 – 584 (1974-2)
(9) T. Aida, Y. Terauchi, On the Bending Stress of Spur Gears, Transactions of the Japan Society of Mechanical Engineers (3rd Dept.) Vol. 27, No. 178, p. 853 – 876, (1961-6)
(10) A. Kubo, T. Nonaka, T., Imamura: Equivalent Tooth Form Deviation and Vibrational Excitement due to Alignment Errors of Helical Gears, Japan Society of Mechanical Engineers Conference Papers, Vol. 68th, No. Pt. C, p.149 – 151, (1991)
(11) T. Imamura: Changes in Combined Deviation Curves resulting from Gear Alignment Changes, and Their Effect on Gear Power Status, Kyoto University Eng. Dept., Precision Engineering Research Center Papers (1987-3)

Author (organization or company)

Chiaki UZUKI(Tochigi R&D Center)、Masami HIRAOKA(Tochigi R&D Center)、Masayuki NAKADA(Tochigi R&D Center)、Yoshikazu TATENO(Tochigi R&D Center)、Kohki MIZUNO(Tochigi R&D Center)

We would like to get your opinion on this research paper. (This is only applicable to registered members.)

The readers of this research paper have also selected these research papers.

Prediction of Mesh Misalignment of External Gear for Transmission
Article of Honda R&D Technical Review Vol.19 No.2
Development of High-performance Gear Materials
Article of Honda R&D Technical Review F1 Special (The third Era Activities)
Prediction of Tooth Root Bending Stress in Hypoid Gears for Drivetrain
Article of Honda R&D Technical Review Vol.22 No.1