Finite Element Analysis of High Contact Ratio Spur Gears in Mesh

[+] Author and Article Information
Jiande Wang, Ian Howard

Rotating Machinery Research Group, Dept. of Mechanical Engineering, Curtin University of Technology, Australia

J. Tribol 127(3), 469-483 (Jun 13, 2005) (15 pages) doi:10.1115/1.1843154 History: Received April 08, 2003; Revised April 14, 2004; Online June 13, 2005
Copyright © 2005 by ASME
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The FE model and its solution under the extreme loading condition: (a) FE model of the gears in mesh (ratio 1:1) and its mesh adaptation with contact (MT: mid-tooth (which will present the tooth load share and stresses); AT: approach tooth; RT: recess tooth; Roll angle=0: when MT is contacted at the pitch point (un-loaded)); and (b) when the maximum contact stress occurred at the tooth (RT) tip, comparison has made between the element size and the width of the contact zone.
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The change over process under various input loads of the involute gears in mesh (model 0)
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The variation of handover regions and contact ratio with input load
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Gear tooth with modified tooth profile
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Comparisons between unmodified results (Model 0) and Model 2
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The contact ratio of model 0 to model 4, where the unloaded (or the theoretical) contact ratio of model 0 should be 2.4 if the tooth tip fillet was not applied
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The comparisons between model 4 and model 0
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The tooth stress comparisons between model 4 and model 1
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The tooth stress comparisons between model 4 and model 2
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The tooth stress comparisons between model 4 and model 3
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Illustration of the contact ratio and higher optimal relief length versus the tooth addendum variations




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