The gears are generally used to transmit power and torque. Gears are one of the most critical components in mechanical power transmission systems. The efficiency of power transmission is very high when compared to other kind of transmission. In the gear design the bending stress and surface strength of the gear tooth are considered to be one of the main contributors for failure of the gears in gear set. Thus, analysis of stresses has become popular as an area of research on gears to minimize or to reduce the failures and for optimal design of gears. In this paper bending stress at the root of the helical gear tooth can be calculated by using analytical method which is calculated by the Lewis stress formula. In this project, helical gear is designed by using solid works 2016 and the numerical solution is done by ANSYS, which is a finite element analysis package. The main objective of this research has to reduce the stresses induced in gear tooth profile by changing five different helix angles (13˚, 18˚, 23˚, 28˚ and 33˚). In this paper, 23˚ of helix angle is selected for helical gear used in synchromesh gearbox according to the ranges of helix angles and AISI 5160 OQT 400 is chosen for helical gear the maximum von-Mises stress and strain values of AISI 5160 OQT 400 are less than other two materials. The results are then compared with both the Lewis equation and ANSYS procedure.
Bending stress, Helical gear, Helix angle, Lewis equation, surface strength
Myo Zaw , Dr. Aung Ko Latt "Design Of Synchromesh Mechanism And Stress Analysis Of Gear For Hijet" Iconic Research And Engineering Journals Volume 2 Issue 8 2019 Page 140-146
Myo Zaw , Dr. Aung Ko Latt "Design Of Synchromesh Mechanism And Stress Analysis Of Gear For Hijet" Iconic Research And Engineering Journals, 2(8)