The Effect of Different Design Parameters on the Cycloid Teeth- Straight Bevel Gear Bending Stress

Nassear Rasheid Hmoad, Tariq Mohammad Hammza, Aveen Ahmed Abdulkareem, Mohammad Qasim Abdullah


Aeronautical Eng. Dept., College of Engineering, University of Baghdad.

Electromechanical Engineering Dept., University of Technology.

Mechanical Eng. Dept., College of Engineering, University of Baghdad.

Corresponding Author Email: [email protected] ; [email protected] 

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Due to their important role in mechanical power transmission, gears were the subject of tremendous works regarding the avoidance of failure, noise, and vibration or introducing the enhancement based on strength and compactness aspects. This work uses cycloidal profile instead of the involute one to invest its ability to withstand the induced bending stresses in straight bevel gear drive. The main objective is to examine the effect of module, cone angle, and roller radius on bending stress. Starting from the generation process, the 3-D models have been mathematically described as a set of points represent the cycloid profile which are feed to the FE solver. The proposed mathematical cycloid- straight bevel gear geometrical model has been verified according to the available published works and showed a complete conformity. Bending strength has been assessed based on the von- misses stress. Results show that module has the key role regarding the minimization of bending stress, the larger the module the smaller the bending stress value, reducing the roller radius could well control the bending stress while increasing the cone angle leads to decrease bending strength.