摘要
以航空直齿轮为研究对象,基于三维有限元方法讨论轮缘厚度对齿根应力的影响规律。介绍ISO6336/AGMA标准中轮缘影响因子随厚度的变化趋势。利用三维有限元建立5齿局部模型,讨论轮缘影响因子的变化规律并与标准和文献结果进行对比,证明模型的正确性。在此基础上,综合考虑薄轮缘、薄腹板和细长轴等结构特征,建立了齿轮整体三维有限元模型,详细分析轮缘厚度对齿根应力和轮缘应力的影响规律。讨论ISO6336/AGMA标准在航空直齿轮弯曲强度校核中的适用性。
Aviation spur gear was taken as the research object,the influence law of rim thickness on root stress was discussed by using 3D finite element method.The variation trend of rim influence factor with thickness in ISO6336/AGMA standard was introduced.The five-tooth local model was established by using a 3D finite element method,the variation law of the rim influence factor was discussed,and the results were compared with the standard and literature to prove the correctness of the model.On this basis,the 3D finite element model of the whole spur gear was built by comprehensively considering the structural features,such as thin rim,thin web and flexible shaft.The influence laws of rim thickness on the tooth root stress and the rim stress were analyzed in detail.The applicability of ISO6336/AGMA standard in the bending strength rating of the aerospace spur gear was discussed.
作者
张云秀
韩志引
李东艳
ZHANG Yunxiu;HAN Zhiyin;LI Dongyan(Weifang Engineering Vocational College, Weifang Shandong 262500, China)
出处
《机床与液压》
北大核心
2020年第21期176-181,共6页
Machine Tool & Hydraulics
关键词
航空直齿轮
三维有限元
轮缘厚度
齿根应力
轮缘应力
Aerospace spur gear
3D finite element
Rim thickness
Tooth root stress
Rim stress
