华南理工大学学报(自然科学版) ›› 2023, Vol. 51 ›› Issue (11): 131-139.doi: 10.12141/j.issn.1000-565X.230146

所属专题: 2023年流体动力与机电控制工程

• 流体动力与机电控制工程 • 上一篇    下一篇

循环式行星滚柱丝杠副的疲劳分析与寿命预测

乔冠1 廖荣1 张校民1 姜广君1 马尚君2   

  1. 1.内蒙古工业大学 内蒙古自治区先进制造技术重点实验室, 内蒙古 呼和浩特 010051
    2.西北工业大学 陕西省机电传动与控制工程实验室, 陕西 西安 710072
  • 收稿日期:2023-03-27 出版日期:2023-11-25 发布日期:2023-05-16
  • 作者简介:乔冠(1990-),男,博士,副教授,主要从事行星滚柱丝杠传动设计与研制研究。E-mail:qiaoguan@imut. edu. cn
  • 基金资助:
    国家自然科学基金资助项目(52265009);内蒙古自然科学基金资助项目(2020BS05003);内蒙古直属高校基本科研业务费专项资金资助项目(JY20220284);内蒙古工业大学科学研究项目(ZZ0201903)

Fatigue Analysis and Life Prediction of Recirculating Planetary Roller Screw Mechanism

QIAO Guan1 LIAO Rong1 ZHANG Xiaomin1 JIANG Guangjun1 MA Shangjun2   

  1. 1.Inner Mongolia Key Laboratory of Advanced Manufacturing Technology,Inner Mongolia University of Technology,Hohhot 010051,Inner Mongolia,China
    2.Shaanxi Engineering Laboratory for Transmissions and Controls,Northwestern Polytechnical University,Xi’an 710072,Shaanxi,China
  • Received:2023-03-27 Online:2023-11-25 Published:2023-05-16
  • About author:乔冠(1990-),男,博士,副教授,主要从事行星滚柱丝杠传动设计与研制研究。E-mail:qiaoguan@imut. edu. cn
  • Supported by:
    the National Natural Science Foundation of China(52265009);the Natural Science Foundation of Inner Mongolia(2020BS05003)

摘要:

循环式行星滚柱丝杠副作为行星滚柱丝杠副的衍生机构,是一种通过多个沟槽状滚柱与丝杠、螺母螺纹啮合的传动机构。为了研究循环式行星滚柱丝杠副的随机振动疲劳特性,文中基于疲劳失效理论,建立了该传动机构的有限元模型,并进行了动力学分析和疲劳寿命预测。首先,根据材料应力-循环寿命(S-N)曲线和Miner线性疲劳累积损伤理论,利用疲劳分析软件对循环式行星滚柱丝杠副进行疲劳分析,得到了接触区域的疲劳结果云图和各节点的损伤值;然后,基于建立的4种疲劳寿命预测模型,将得到的解析解与仿真损伤值进行对比。结果表明:循环式行星滚柱丝杠副在3 960 Hz下引发的共振对其结构造成的损伤最大;循环式行星滚柱丝杠副在相同激励频率条件下的最大接触应力和最小疲劳寿命的区域相同;循环式行星滚柱丝杠副谐响应分析应力峰值和疲劳分析功率谱密度峰值的对应频率相同。该研究可为循环式行星滚柱丝杠副设计与抗疲劳优化提供理论指导。

关键词: 循环式行星滚柱丝杠副, 模态分析, 谐响应分析, 疲劳分析, 寿命预测

Abstract:

The recirculating planetary roller screw mechanism, as a derivative of planetary roller screw mechanism, is a transmission mechanism that is engaged by the screw or nut thread and multiple circular groove rollers. To study the random vibration fatigue characteristics of the recirculating planetary roller screw mechanism, this paper established a finite element model of the mechanism based on fatigue failure theory, and conducted the dynamic analysis and fatigue life prediction. Firstly, according to the material stress-number of cycles (S-N) curve and Miner’s linear damage accumulation theory, fatigue analysis was carried out on the recirculating planetary roller screw mechanism using the related software, and fatigue results in the contact area and damage values at each node were obtained. Then, based on the developed four fatigue life prediction models, the obtained analytical solutions were compared with the simulated damage values. The results show that the resonance induced by the recirculating planetary roller screw mechanism at 3 960 Hz causes the most damage to the mechanism. When the excitation frequency is the same, the area of maximum contact stress and minimum fatigue life is the same. Besides, the corresponding frequencies of the peak stress in the harmonic response analysis and that of the peak power spectral density in the fatigue analysis of the recirculating planetary roller screw mechanism are the same. This study can provide a theoretical guidance for the design and fatigue optimization of the recirculating planetary roller screw mechanism.

Key words: recirculating planetary roller screw mechanism, modal analysis, harmonic response analysis, fatigue analysis, life prediction

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