Abstract
In helical gears teeth are at an angle with the axis of the gears. A helical gear is termed right handed or left handed. This paper explains about the geometry of helical gears by mathematical equations, load distribution at various positions of the contact line and the stress analysis of helical gears using three-dimensional finite element method. The contact stress in the tooth root was examined for steel C45 using three-dimensional finite element model. Root stresses are evaluated for different positions of the contact line when it moves from the root to the tip. These stresses were compared with the theoretical values. Both results agree very well. This indicates that the finite element method model is accurate.
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