回转窑滚圈多轴疲劳寿命预测及与轴线偏移关系研究

沈意平; 王送来; 李学军; B·S·迪隆

doi:10.3879/j.issn.1000-0887.2010.02.008

回转窑滚圈多轴疲劳寿命预测及与轴线偏移关系研究

doi: 10.3879/j.issn.1000-0887.2010.02.008

湖南科技大学机械设备健康维护湖南省重点实验室,湖南湘潭 411201;

基金项目: 国家“863”计划基金资助项目(2007AA04Z415);国家自然科学基金资助项目(50675066);湖南省教育厅项目(09C407)

详细信息

作者简介:
沈意平(1981- ),女,湖南湘潭人,讲师,硕士(联系人.E-mail:yiping1011@163.com).

中图分类号: O346;TH114
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出版历程
- 收稿日期: 1900-01-01
- 修回日期: 2009-12-06
- 刊出日期: 2010-02-15

Multiaxial Fatigue Life Prediction of Kiln Roller Under the Axis Line Deflection

Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China;
Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario, K1N6N5, Canada

摘要

摘要: 结合轴线偏移情况开展回转窑滚圈多轴疲劳寿命研究，采用了Wang和Brown提出的多轴疲劳准则和雨流计数法及Miner准则进行累积损伤评估．回转窑运行轴线偏移会导致滚圈承受的支承载荷分布严重不均，因此引入载荷比来描述轴线偏移程度以进一步定量分析滚圈应力．采用有限元软件ANSYS进行了各载荷比下滚圈的接触应力分析，并根据滚动接触区域情况计算得到了切向摩擦应力．以某回转窑滚圈为分析对象，计算得到了随载荷比变化的疲劳寿命曲线，揭示了轴线偏移对滚圈疲劳寿命的影响规律．研究对减少滚圈疲劳失效有重要意义，同时也可作为轴线调整和优化调窑的理论依据．
- 疲劳寿命 /
- 多轴疲劳 /
- 轴线偏移 /
- 滚动接触
Abstract: Multiaxial fatigue life of the roller in rolling contact with whee lswith respect to axis line deflection was investigated.The multiaxial fatigue criterion proposed by Wang and Brown,together with rainflow countingm ethod and the Miner-Pamlgren's rule,were applied for cumulative damage estmiation and life prediction.As axis line deflection of overlong kilns generally results in asymm etricload distribution on each roller,the load ratio was in troduced to describe deflection for quantitative stress anaylsis,which was performed with in the finite element code ANSYS.And the tangen tial frictional stress walch lated in terms of the rolling contact area condition.By taking on eroller as an example,the plotted fatigue life curve versus load ratio discovers how axis line deflection affects fatigue life.The study is quitesign ificant to prevent fatigue failure of the roller,and canprovide bas is to adjust and optimize axis line of rotary kiln.
- multiaxial fatigue /
- fatigue life /
- axis line deflection /
- rolling contact

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参考文献(20)

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