整体离心叶轮叶片的振动可靠性分析
Analysis of Integrated Centrifugal Impeller Blade Vibration Reliability
-
摘要: 述及了整体离心叶轮的结构及其故障模式特点,在强迫振动放大系数模型的基础上提出了离心叶轮叶片的振动可靠性分析方法,结合固有频率灵敏度分析的叶片共振相干分析,通过厚度控制来调整整体叶轮叶片的固有频率,控制强迫振动放大系数使之避开危险性共振或强迫振动,给出了一实际算例,算例及试车试验表明本文方法是有效的。Abstract: The characteristic of the integrated impeller blade structure and its failure mode is presented.A method for integrated impeller blade resonance reliability analysis based on forced vibration magnifying factor model combined with sensitivity analysis of natural frequency is proposed.Fatal resonance and forced vibration can be avoided by controlling the magnifying factor of forced vibration,and by controlling the natural frequency which is affected by the thickness of the integrated impeller blade.Finally,an example is presented.Compared with succedent test result,it shows that the method presented here is effective.
-
Key words:
- aerospace propulsion system /
- impeller /
- blade /
- vibration /
- reliability
-
点击查看大图
计量
- 文章访问数: 1369
- HTML浏览量: 2
- PDF量: 448
- 被引次数: 0
下载: