首页 | 本学科首页   官方微博 | 高级检索  
     

微型燃气轮机浮环轴承动力学参数影响因素研究
引用本文:沈那伟.微型燃气轮机浮环轴承动力学参数影响因素研究[J].振动工程学报,2012,25(6).
作者姓名:沈那伟
作者单位:1. 哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001;中国北方发动机研究所,山西大同037036
2. 哈尔滨工业大学机电工程学院,黑龙江哈尔滨,150001
基金项目:国家自然科学基金资助项目,国防重点实验室基金资助项目
摘    要:浮环轴承在高速运转时内层油膜承载力大于外层油膜承载力,在分析浮环轴承稳态内外层油膜压力时,只分析外层油膜压力即可表现出浮环轴承的承载能力.利用转子动力学分析软件DyRoBes与有限差分方法分别对相对重载微型燃气轮机浮环轴承外层油膜压力Reynolds方程进行数值计算,分析并比较其运算结果.由于浮环轴承自身结构的特点,使得浮环轴承内外层油膜刚度和阻尼的相互关系等效于弹簧和阻尼的串联,由此可以算出不同转速下的浮环轴承油膜总刚度和总阻尼及偏心比、轴颈的静平衡位置等影响浮环轴承油膜特性及动力学行为的重要参数,最后利用Routh-Hurwitz判别法分析了对应转速下的油膜稳定性.

关 键 词:微型燃气轮机  浮环轴承  油膜压力  刚度阻尼系数  稳定性
收稿时间:2011/9/28 0:00:00
修稿时间:2012/11/24 0:00:00

Effect factors study of micro-turbine floating-ring bearing dynamics parameters
Shen Na-wei.Effect factors study of micro-turbine floating-ring bearing dynamics parameters[J].Journal of Vibration Engineering,2012,25(6).
Authors:Shen Na-wei
Affiliation:China North Engine Research Institute
Abstract:In this paper, the capacity of outer oil film of floating-ring bearing was analyzed because the capacity of inner oil film is larger than the outer"s. Based on the DyRoBes software and Finite difference method, this paper analyzed the pressure of outer oil film by using the two ways and compared the two results. Because the structure characteristics of floating-ring bearing , the relationship of stiffness and damping of inner and outer films equivalent of the series of spring and damping, this paper calculated the total stiffness and damping of oil film of floating-ring bearing under different speeds. Using the method Routh-Hurwitz criterion analyzed the stability of oil film
Keywords:Floating-ring bearing  Pressure of oil film  Stiffness  Damping  Stability
本文献已被 万方数据 等数据库收录!
点击此处可从《振动工程学报》浏览原始摘要信息
点击此处可从《振动工程学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号