Evaluation of Bending Fatigue Life of Spiral Bevel Gears by Simulation and Accelerated Test

WEI Bingyang;GUO Yuliang;GU Dewan;WANG Yongqiang

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2022, Vol. 43 ›› Issue (11) : 2945-2952. DOI: 10.12382/bgxb.2021.0601
Paper

Evaluation of Bending Fatigue Life of Spiral Bevel Gears by Simulation and Accelerated Test

  • WEI Bingyang， GUO Yuliang， GU Dewan， WANG Yongqiang
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Abstract

Fatigue life testing is an indispensable method for evaluating the gear strength of spiral bevel gears, but the lack of fatigue test data has long led to high uncertainties in the design of related products. This study establishes a three-dimensional finite element model for a spiral bevel gear and presents a simulation calculation of the corresponding bending fatigue life. The mechanism and methods of the accelerated fatigue test are discussed, and the stress factors for the accelerated test are presented. The tensile fatigue strength test is carried out on the 20CrNiMo material test bar, and the S-N curve of the material is obtained. Based on this, a three-dimensional finite element software is used to complete multiple calculations of simulated digital bending fatigue life in a special closed power flow bevel gear. The durability test bench has been used to conduct several sets of tests on gear bending strength and fatigue life. Test results and theoretical simulation results are in good agreement, with a comparison error of less than 3.2%. Through fatigue life simulation and accelerated testing, the feasibility of the evaluation method is proved. The approach works well in evaluating the bending fatigue strength of bevel gears with complex structures.

Key words

spiralbevelgear / finiteelement / S-Ncurve / fatiguestrength / acceleratedfactor

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WEI Bingyang， GUO Yuliang， GU Dewan， WANG Yongqiang. Evaluation of Bending Fatigue Life of Spiral Bevel Gears by Simulation and Accelerated Test. Acta Armamentarii. 2022, 43(11): 2945-2952 https://doi.org/10.12382/bgxb.2021.0601

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