International Journal of Mechatronics and Manufacturing Technology

Authors: S.Ramanjaneyulu, R.Ramakrishna, V. Krishna Kanth

Abstract: This work made an attempt to summarize about contact stresses developed in a mating helical gear which has involute teeth. Face width and helix angle are important geometrical parameters in determining the state of stresses during the design of gears. The analysis of contact stresses has become popular as an area of research on gears to minimize and reduce the failures. The present investigation is carried out to make use of helical gear, by analyzing the contact stresses for different helix angles (0˚, 5˚, and 15˚) and (15 mm, 20 mm, and 25 mm) Face width. A Three-dimensional solid model is generated by Solid Works which is powerful and modern solid modeling software. The numerical solution is done by Ansys, which is a finite element analysis package. The analytical approach is based on contact stress equation, to determine the contact stresses between two mating gears. The results obtained from Ansys values are compared with Analytical results are in close agreement. Results advices that with increase in helix angle and face width, contact stresses decreases for a pair of helical gears. The present analysis is useful in quantifying the above said parameters that helps in safe and efficient design of the helical gear.

Keywords: Contact Stress, Helix Angle, Face Width, Friction Coefficient, ANSYS-14.5, VB Interface.