Contact Stress Analysis of Spur Gear Under the Different Rotational Speed by Theoretical and Finite Element Method

Abstract

In this study that spur gears are chosen, contact stress of spur gear is presented under the effect of rotational speed. Three-dimensional simulation of dynamic analysis of gears designed and modeled using ANSYS software. The dynamic analysis included in the determination of dynamic stresses analysis. Contact stress is theoretically calculated and analyzed and numerically estimated using both Hertzian mathematical model and finite element method respectively. Different values of rotational speed used to study its effect on contact stress. Both methods compared by evaluating the percentage error of contact stress, and the modeling of the spur gear and stress analysis of spur gear carried out using SOLID WORK and ANSYS V14, respectively. The most significant note in this study concludes that increasing speed causes vibration and pitting failure due to repetitions.

Calculating the Load Distribution and Contact Stress of the Disposable Harmonic Drive under Full Load

“…Thomas et al [4] proposed a new coordinate system and search method to predict the tooth root bending stress in asymmetric spur gears. Using the Hertz contact principle and a finite element model (FEM), Mohammed et al [5] determined the influence of rotational speed on the contact stress of spur gears. Wen et al [6] established an improved model for calculating the contact stress of standard gears and tip-relieved gears based on the precise tooth profile equations.…”