Stress Concentration Studies for Crack Propagation Analysis of Spur Gear Using ABAQUS

Gear failures are usually caused by gears, which are regularly utilised mechanical components in power transmission. Therefore, proper gear design implementation is crucial in light of the various problems that frequently occur during gear operation. The most dangerous failures are those caused by fracture initiation brought on by tensile stress in the tooth foot region, as they have the potential to cause irreparable harm. Utilizing ABAQUS’ Extended Finite Element Method, this study's goal is to track the crack progression in a spur gear. Crack initiates where the tensile stress concentration is maximum. The prediction of stress concentration is applied considering the tooth behavior in bending fatigue. The parametric modeling of Spur gear is completed in CATIA to model gear based on Backup ratio. It is shown that the fields of maximum stress concentration are the tooth foot region.