Study on Contact Stress Analysis of Spur Gear with & Without Crack

Gearing is one of the most critical components in mechanical power transmission systems. Due to continuous cyclic load of gear tooth fatigue cracks are formed gears are subjected to many type of failure like bending ,wear ,contact ,pitting etc,. bending & contact failure are produced gear damage on gear.In this paper, contact stress analysis of involute spur gears was studied for various meshing position. By using the concepts of linear elastic fracture mechanics the crack was introduced on gear. The effect different contact parameters with crack & without crack were studied in static conditions of gear & rotating gear from tip contact to tip relief.