文章摘要
白浩宇,穆塔里夫·阿赫迈德,白云松,鞠增鑫.风机齿轮箱轴承应力及疲劳寿命分析[J].机床与液压,2022,50(12):11-16.
BAI Haoyu,MUTELLIP Ahmat,BAI Yunsong,JU Zengxin.Analysis of Bearing Stress and Fatigue Life of Fan Gearbox[J].Machine Tool & Hydraulics,2022,50(12):11-16
风机齿轮箱轴承应力及疲劳寿命分析
Analysis of Bearing Stress and Fatigue Life of Fan Gearbox
  
DOI:10.3969/j.issn.1001-3881.2022.12.003
中文关键词: 风机齿轮箱轴承  局部剥落缺陷  缺陷扩展  疲劳寿命
英文关键词: Fan gearbox bearings  Local spalling defects  Defect extension  Fatigue life
基金项目:国家自然科学基金地区科学基金项目(51565056)
作者单位E-mail
白浩宇 新疆大学机械工程学院 95127937@qq.com 
穆塔里夫·阿赫迈德 新疆大学机械工程学院,新疆大学电气工程学院  
白云松 新疆大学机械工程学院  
鞠增鑫 新疆大学机械工程学院  
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中文摘要:
      针对风机齿轮箱轴承在运转中出现的外圈局部剥落缺陷及其造成的疲劳寿命问题,以5 MW风机齿轮箱输出轴轴承为研究对象,建立无缺陷轴承和不同宽度尺寸局部剥落缺陷轴承的数值模型。对模型进行显式动力学分析,分析转速及缺陷尺寸扩展对轴承各部件的应力变化;以名义应力法和损伤理论为准则,对无缺陷轴承和有缺陷轴承进行疲劳分析,得出轴承的损伤和疲劳寿命。结果表明:随着局部剥落缺陷的扩展和转速的增大,这两轴承各部件应力均上升,但寿命均下降。
英文摘要:
      Aiming at the problem of partial spalling defect of outer ring and fatigue life caused by it of fan gearbox during operation, taking the output shaft end bearing of 5 MW fan gearbox as the research object, the numerical models of flawless bearing and partial spalling defect bearing with different width and size were established. The explicit dynamic analysis of the model was carried out to analyze the stress variation law of the two bearing components caused by the speed and defect size expansion; based on the nominal stress method and damage theory, the fatigue analyses of non defective bearings and defective bearings were carried out, and the damage and fatigue life of bearings were calculated numerically. The results show that with the extension of local spalling defects and the increase of rotating speed, the stress of each component of the two bearings increases, but the service life decreases.
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