| 航空发动机离心叶轮叶片动特性试验研究 |
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| 引用本文： | 雷沫枝,陈运西,卢艳辉.航空发动机离心叶轮叶片动特性试验研究[J].测控技术,2015,34(5):133-136. |
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| 作者姓名： | 雷沫枝 陈运西 卢艳辉 |
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| 作者单位： | 中航工业航空动力机械研究所,湖南株洲412002;航空发动机振动技术航空科技重点实验室,湖南株洲412002 |
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| 摘 要： | 在离心压气机试验台对离心叶轮叶片动应力测量技术进行了试验研究,介绍了应用电阻应变计和高速滑环引电器成功录取了压气机台架试车转速至39500 r/min的离心叶片动应变数据,分析了测试过程中遇到的问题,提出了今后测试的改进措施,并对试验结果进行了初步的分析.通过研究获得离心压气机工作过程中,大小离心叶片动频和动应变随转速变化的规律以及叶片在特定气动力激励条件下的动态响应.
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| 关 键 词： | 航空发动机 离心压气机 离心叶轮叶片 动特性 模态频率 |
Study on Dynamic Characteristics Test for Aero Engine Centrifugal Impeller Blades |
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| LEI Mo-zhi
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CHEN Yun-xi
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LU Yan-hui.Study on Dynamic Characteristics Test for Aero Engine Centrifugal Impeller Blades[J].Measurement & Control Technology,2015,34(5):133-136. |
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| Authors: | LEI Mo-zhi CHEN Yun-xi LU Yan-hui |
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| Abstract: | Dynamic stress measurement technique of centrifugal impeller blades is studied in a centrifugal compressor test bench.The dynamic stress data of centrifugal blades that speed up to 39500 r/min are obtained by applying stain gauges and a slip ring unit.Some problems encountered during testing are analyzed and future improvements are proposed.Preliminary analysis of the test results is given.From this research,the variation law of dynamic frequencies and strains of both full blade and splitter blade are obtained,as well as the dynamic response under specific aerodynamic exciting conditions. |
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| Keywords: | aero-engine centrifugal compressor centrifugal impeller blades dynamic characteristics modal frequency |
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