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TECHNICAL PAPERS

Consideration of Moving Tooth Load in Gear Crack Propagation Predictions

[+] Author and Article Information
David G. Lewicki, Robert F. Handschuh

U.S. Army Research Laboratory, NASA Glenn Research Center, Cleveland, OH 44135

Lisa E. Spievak, Paul A. Wawrzynek, Anthony R. Ingraffea

Cornell Fracture Group, Cornell University, Ithaca, NY 14853

J. Mech. Des 123(1), 118-124 (Oct 01, 2000) (7 pages) doi:10.1115/1.1338118 History: Received May 01, 2000; Revised October 01, 2000
Copyright © 2001 by ASME
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References

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Abersek,  B., and Flasker,  J., 1994, “Stress Intensity Factor for Cracked Gear Tooth,” Theor. Appl. Fract. Mech., 20, No. 2, pp. 99–104.
Sfakiotakis,  V. G., Katsareas,  D. E., and Anifantis,  N. K., 1997, “Boundary Element Analysis of Gear Teeth Fracture,” Eng. Anal Boundary Elem. , 20, No. 2, pp. 169–175.
Inoue, K., and Kato, M., 1994, “Crack Growth Resistance Due to Shot Peening in Carburized Gears,” Presented at the 30th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Indianapolis, IN.
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Figures

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Location of load cases for finite element mesh
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Mode I and mode II stress intensity factors for a unit load and an initial crack of 0.26 mm
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DANST computer program output of static gear tooth load, 68 N-m driver torque
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Stress intensity and tangential stress factors as a function of gear rotation, 68 N-m driver torque, 0.26 mm initial crack size
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Stress intensity factors from gear tooth crack propagation simulation, backup ratio=3.3
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Stress intensity factors from gear tooth crack propagation simulation, backup ratio −0.2
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Comparison of predicted gear tooth crack propagation paths with experimental results (P=predicted,E=experiments)
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Boundary element model of OH-58 spiral-bevel pinion
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Location of tooth contact ellipses and magnitude of load on OH-58 spiral-bevel pinion tooth
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Stress intensity factors from three dimensional OH-58 pinion tooth crack propagation simulation; step 1, crack area=5.96 mm2
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Stress intensity factors from three-dimensional OH-58 pinion tooth crack propagation simulation; step 1, normalized position along crack front=0.83
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OH-58 spiral-bevel pinion tooth crack propagation simulation after seven steps
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Comparison of OH-58 spiral-bevel pinion tooth crack propagation simulation to experiments

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