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Journal of Applied Sciences
Year: 2012  |  Volume: 12  |  Issue: 23  |  Page No.: 2404 - 2410

The Stress Distribution of Gear Tooth Due to Axial Misalignment Condition

M.R. Lias, T.V.V.L.N. Rao, M. Awang and M.A. Khan    

Abstract: Misalignment in gear dynamics mesh always lead to generate a vibration that causes of un-even dynamic load on transmitting torque to the gear tooth. This type of load is also considered as one of the main criteria on contributing the high stresses happen to the teeth that lead to the fatigue breakage after in some duration of cyclic loading time. This effort of study is made to analyze theoretical forces that create stresses with the effect of axial misalignment to a spur gear in meshing condition. A 3D CAD model of the pinion hobbing gear tooth was created with Autodesk Inventor 2010 and analyzes using ANSYS V13 FEA method. The transmitted dynamic load was calculated with change of misalignment angle proportionally to the theoretical contact area on the tooth face. As a result the stress distribution at the contact region and the tooth root is clearly seen variant with the misalignment angle and the equivalent stress is directly proportional with the misalignment deviation. The values of equivalent stresses and its distribution are change with the changing of deviation angle. The stress concentration is higher at the contact region and the tooth root with augmentation of misalignment angle. The face load factor in align and misalign shows the increasing of the load deviation will cause the factor to increase and probably the major contribution to the vibration of the gear mesh in dynamic condition.

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