重载RV减速器的摆线针轮疲劳寿命预测

朱良斌; 肖正明; 杨凯; 张卿冕

doi:10.13433/j.cnki.1003-8728.20200612

重载RV减速器的摆线针轮疲劳寿命预测

doi: 10.13433/j.cnki.1003-8728.20200612

昆明理工大学机电工程学院，昆明　650500

基金项目: 国家自然科学基金项目（51965025）与云南省重点研发计划（202003AF140007）

详细信息

作者简介:
朱良斌（1994−），硕士研究生，研究方向为机械动力学，598921658@qq.com

通讯作者:
肖正明，教授，硕士生导师，博士，suzem@sina.com

中图分类号: TH113;TH132.414
计量
- 文章访问数: 19
- HTML全文浏览量: 6
- PDF下载量: 7
- 被引次数: 0
出版历程
- 收稿日期: 2021-04-23
- 网络出版日期: 2023-04-21
- 刊出日期: 2023-03-25

Fatigue Life Prediction of Cycloid Needle Wheel for Heavy Load RV Reducer

Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China

摘要

摘要: 以某型重载RV减速器中的摆线针轮为研究对象，利用有限元分析软件建立轮齿接触等效模型，得到了摆线轮齿面的接触应力分布并分析了其最大接触应力区，基于刚柔耦合动力学建模，得到了最大接触应力区的应力-时间历程。采用疲劳累计损伤理论，基于疲劳寿命专用仿真软件，以有限元结果和载荷谱为输入，分析了摆线针轮在相应外部循环载荷作用下的最终寿命，研究结果表明：摆线轮最大应力部位和危险部位在分度圆附近且靠近端面，最大应力为817 MPa，疲劳寿命为10^6.673次，等效寿命为5 233 h，为摆线轮的抗疲劳优化设计提供了参考价值。
- 摆线针轮 /
- 刚柔耦合 /
- 载荷谱 /
- 疲劳寿命
Abstract: Taking the cycloid needle wheel ofthe heavy load RV reducer as the research object, the finite element analysis software is used to establish the gear tooth contact equivalent model, and the contact stress distribution of the cycloid wheel tooth surface is obtained and its maximum contact stress area is analyzed. Based on the rigid-flexible coupling dynamics modeling, the stress-time history of the maximum contact stress area is obtained. In terms of the fatigue cumulative damage theory, the final life of the cycloid needle wheel under the corresponding external cyclic load is analyzed with the finite element results via special fatigue life simulation software and load spectrum as input. The results show that the maximum stress position of the cycloid wheel and the dangerous part is near the index circle and close to the end face, the maximum stress is 817 MPa, the fatigue life is 10^6.673 times, and the equivalent life is 5 233 h, which provides the reference value for the anti-fatigue optimization design of the cycloid wheel.
- cycloid needle wheel /
- rigid-flexible coupling /
- load spectrum /
- fatigue life

HTML全文

图 1 RV减速器的结构简图

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图 2 摆线传动示意图

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图 3 Abaqus有限元模型

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图 4 摆线轮接触应力云图

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图 5 摆线轮最大接触应力误差

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图 6 最大接触应力区域应力分布

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图 7 Mises和Tresca应力沿齿宽方向分布图

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图 8 RV减速器刚柔耦合动力学建模流程

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图 9 RV减速器动力学仿真模型

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图 10 RV减速器行星架转速

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图 11 最大Mises应力区的应力-时间历程曲线

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图 12 应力-时间历程曲线频谱图

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图 13 高碳铬轴承钢GCr15S-N曲线

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图 14 FE-SAFE疲劳寿命计算过程

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图 15 疲劳寿命仿真结果

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表 1 啮合力及啮合应力

针齿编号	啮合力/N	接触应力/MPa	针齿编号	啮合力/N	接触应力/MPa
1	669	421.38	8	2149	737.15
2	2002	703.92	9	1956	703.38
3	2367	799.53	10	1716	645.62
4	2459	815.8	11	1428	594.61
5	2455	808.63	12	1092	521.53
6	2398	792.15	13	708	410.30
7	2296	764.54	14	279	239.92

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表 2 GCr15钢的力学性能

材料名称	弹性模量/ GPa	屈服强度/ MPa	抗拉强度/ MPa	泊松比
GCr15	210	1617	2310	0.3

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