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| 挤压油膜阻尼器转子系统非线性动力特性分析 | |
| 引用本文： | 陈照波,焦映厚,陈明,夏松波,黄文虎,刘振德,张直明.挤压油膜阻尼器转子系统非线性动力特性分析[J].推进技术,2001,22(1):33-35. |
| 作者姓名： | 陈照波 焦映厚 陈明 夏松波 黄文虎 刘振德 张直明 |
| 作者单位： | 1. 哈尔滨工业大学 能源科学与工程学院, 2. 航天机电集团公司31所, 3. 上海大学 轴承研究院, |
| 基金项目： | 国家自然科学基金(19990510)和博士后基金资助项目。 |
| 摘 要： | 为了对挤压油膜阻尼器（SFD）-转子系统非线性动力特性进行分析，提出了油膜力数据库方法，即将挤压油膜阻尼器轴颈沿径向和周向的速度变化范围从（-∞, ∞）转化到（-1, 1)，给定阻尼器的长径比，用有限差分法建立了挤压油膜阻尼器轴颈在各离散运动状态下的油膜力数据库，直接或通过插值求得对应运动状态下的非线性油膜力，从而有效地解决了非线性油膜力的快速计算问题。实际算例计算结果表明，该方法无论在速度还是在精度上都能满足要求，对实际转子系统的动力特性分析及优化设计具有一定的应用价值。 |
| 关 键 词： | 挤压油膜阻尼器－转子系统 非线性动力系统 油膜力数据库 航空发动机 减振元件 |
| 文章编号： | 1001-4055（2001）01-0033-03 |
| 修稿时间： | 2000年2月18日 |
Nonlinear dynamic characteristic analysis of SFD-rotor system |
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| Chen Zhao bo,Jao Ying hou,ChenN Ming,Xia Song bo,Huang Wen hu,Liu Zhen de and Zhang Zhi ming.Nonlinear dynamic characteristic analysis of SFD-rotor system[J].Journal of Propulsion Technology,2001,22(1):33-35. | |
| Authors: | Chen Zhao bo Jao Ying hou ChenN Ming Xia Song bo Huang Wen hu Liu Zhen de and Zhang Zhi ming |
| Institution: | School of Energy Science and Engineering, Harbin Inst.of Technology, Harbin 150001,China;School of Energy Science and Engineering, Harbin Inst.of Technology, Harbin 150001,China;School of Energy Science and Engineering, Harbin Inst.of Technology, Harbin 150001,China;School of Energy Science and Engineering, Harbin Inst.of Technology, Harbin 150001,China;School of Energy Science and Engineering, Harbin Inst.of Technology, Harbin 150001,China;The 31th Research Inst., Beij |
| Abstract: | To analyse nonlinear dynamic characteristic of squeeze filmdamper(SFD )－rotor system, oil film force database method was presented to solve ef fectiv ely fast calculating problem of nonlinear oil film force. The method is to trans form the variation range of SFD's journal speed in radial and circumferential di rection from (-∞，+∞)to(-1,+1).iven the aspect ratio L/D, the oil film force database corresp onding to every discrete motion state can be established by finite difference me thod. In dynamic performance analysis of rotor system, the oil film force in SFD can be obtained directly or by interpolation. The practical simulation results show that the oil film database method is very efficient for nonlinear dynamic a nalysis of rotor system. Its method have definite application value for dynamic performance analysis and optimum design of practical rotor system. |
| Keywords: | Squeeze film damper Dynamic characteristic Oil film force Data ba? |
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