Fatigue Failure Analysis of a Minitype Straight Bevel Driven Gear

Bao Long Liu; Jie Hong; Da Yi Zhang; Yan Hong Ma

doi:10.4028/www.scientific.net/AMR.622-623.605

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 622-623Fatigue Failure Analysis of a Minitype Straight...

Fatigue Failure Analysis of a Minitype Straight Bevel Driven Gear

Abstract:

In the presented paper, the failure mechanism of 12Cr2Ni4A minitype straight bevel gear was analyzed by means of both experimental characterizations and numerical simulation techniques. Fractography and simulation were conducted to find the failure mechanism. 3D finite element models (FEMs) of the driven gear with different structure parameters were constructed and used to simulate the inherent characteristic and stress field in the tooth root. Fractography indicated that teeth of the straight bevel driven gear failed because of high cycle fatigue (HCF). Simulation results showed no resonance but stress concentration in the tooth root. It was concluded that this failure occurred due to high cycle fatigue (HCF) and high stress concentration caused by small tooth root fillet radius.

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Periodical:

Advanced Materials Research (Volumes 622-623)

Pages:

605-610

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.622-623.605

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Online since:

December 2012

Authors:

Bao Long Liu, Jie Hong, Da Yi Zhang, Yan Hong Ma

Keywords:

Bending Fatigue, Bevel Gear, High Cycle Fatigue (HCF), Minitype

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