%0 Journal Article
%T 系统参数对浮环轴承转速比的动态影响
%A 张文静
%A 陈渭
%A 李培
%A 门日秀
%J 工程科学与技术
%D 2015
%R 10.15961/j.jsuese.2015.03.023
%X 中文摘要: 转速比即环速比和轴颈涡动比是涡轮增压器浮环轴承系统的功耗和稳定性研究的重要指标。基于经典短轴承理论，考虑浮环和轴颈的回转变位角速度，推导出内外层非线性动载油膜力的解析模型。考虑轴系的偏心质量引起的离心力，建立了涡轮增压器浮环轴承系统非线性动力学模型。仿真得到环速比和轴颈涡动比随转速的变化曲线，并分析研究了不同转速下偏心质量、润滑油粘度、浮环结构参数等对环速比和涡动比的动态影响机制，及转速比对系统参数敏感程度的变化规律。为浮环轴承的设计研发和涡轮增压器浮环轴承系统的性能评价提供了重要参考。</br>Abstract:Ring speed ratio and whirl ratio of shaft are critical indicators of power consumption and stability of floating ring bearing for turbocharger rotor system supporting.Based on the classic short bearing method,an analytical model of nonlinear dynamic oil-film force of floating ring bearing was presented,and precession angular velocities of floating ring and shaft were token into account in this model.The curves of ring speed ratio-shaft rotating speed and whirl ratio of shaft-shaft rotating speed were got.At different rotating speeds,the dynamic influence mechanisms of system parameters,i.e. eccentric mass,lubricant viscosity,structural parameters of floating ring bearing on speed ratio,and the sensitivity of speed ratio to parameters were studied.The results could be used as an reference to the R&D design of floating ring bearing and system performance evaluation of turbocharger rotor system.
%K 浮环轴承 环速比 涡动比 系统参数 动载 涡轮增压器&lt
%K /br&gt
%K floatingringbearings ringspeedratio whirlratio systemparameters transientload turbochargers
%U http://jsuese.ijournals.cn/jsuese_cn/ch/reader/view_abstract.aspx?file_no=201401015&flag=1