Research on the Rule and Life Prediction of Tooth Root Crack Propagation based on Fatigue Experiment and Numerical Analysis Method
Through the fatigue test of modified spur gear with root crack fault by fatigue testing machine，the rule of root crack propagation is obtained，the root crack is easier to expand along the direction of tooth width than the direction of tooth root， and the growth rate is slow at first and then fast. T...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Transmission
2022-02-01
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| Series: | Jixie chuandong |
| Subjects: | |
| Online Access: | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2022.02.001 |
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| Summary: | Through the fatigue test of modified spur gear with root crack fault by fatigue testing machine，the rule of root crack propagation is obtained，the root crack is easier to expand along the direction of tooth width than the direction of tooth root， and the growth rate is slow at first and then fast. The automatic propagation of the root crack of modified spur gear with same initial crack is analyzed by using the simulation software FRANC3D， and the propagation direction and path of the crack are determined. By comparison， the simulation results are consistent with the experimental results， which shows that the constructed simulation model is verified by the fatigue test， and the reliability of the conclusion is proved. The research on the propagation path and direction of root crack can provide a reliable basis for the design and manufacture of practical gears. On the basis of this study， the related problems of crack growth life are discussed. |
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| ISSN: | 1004-2539 |