| 端面气膜密封动力特性系数的计算 |
| |
| 引用本文： | 刘雨川,徐万孚,王之栎,沈心敏. 端面气膜密封动力特性系数的计算[J]. 清华大学学报(自然科学版), 2002, 42(2): 185-189 |
| |
| 作者姓名： | 刘雨川 徐万孚 王之栎 沈心敏 |
| |
| 作者单位： | 清华大学,精密仪器与机械学系,摩擦学国家重点实验室,北京,100084;沈阳工业学院,润滑技术研究中心,沈阳,110015;北京航空航天大学,机械工程及自动化学院,北京,100083 |
| |
| 基金项目： | 中国博士后科学基金资助项目 |
| |
| 摘 要： | 应用微扰方法和有限元法 ,对端面气膜密封三自由度微扰下 ,密封气膜的刚度和阻尼系数进行了数值求解。该分析可计及多种典型端面结构的动静压效应。分析结果表明 :轴向微扰和角向微扰之间的交叉作用很小 ,可以忽略不计 ,因此工程实际中 ,在进行端面气膜密封的稳定性和强迫振动响应分析时 ,可将三自由度的微扰运动简化为两个相互独立的微扰运动 ,一个只作轴向的微扰移动 ,另一个只沿两个正交轴作角向微扰摆动。算例验证了计算的正确性
|
| 关 键 词： | 动力特性系数 端面气膜密封 有限元法 |
| 文章编号： | 1000-0054(2002)02-0185-05 |
| 修稿时间： | 2000-11-10 |
Dynamic coefficients for gas film face seal |
| |
| LIU Yuchuan ,XU Wanfu ,WANG Zhili ,SHEN Xinmin. Dynamic coefficients for gas film face seal[J]. Journal of Tsinghua University(Science and Technology), 2002, 42(2): 185-189 |
| |
| Authors: | LIU Yuchuan XU Wanfu WANG Zhili SHEN Xinmin |
| |
| Affiliation: | LIU Yuchuan 1,XU Wanfu 2,WANG Zhili 3,SHEN Xinmin 3 |
| |
| Abstract: | The small perturbation method and the finite element method were used to calculate the stiffness and damping coefficients of a gas film with three degrees of freedom for a gas film face seal. The analysis considers hydrostatic and hydrodynamic effects of several typical face configurations. Numerical results show that the interaction between axial and angular perturbations is so small that can be neglected. So in actual engineering analyses the three degrees of freedom can be simplified as two independent perturbations for further stability analysis and force vibration response analysis, one is the axial movement while the other is the angular wobble. Sample case validates the present analysis. |
| |
| Keywords: | dynamic coefficients gas film face seal finite element method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
