苏军*,安中彦,于云飞,白珺.发动机叶片扭转和弯曲变形同步测量新方法[J].实验力学,2017,32(2):279~285 |
发动机叶片扭转和弯曲变形同步测量新方法 |
A New Synchronous Measurement Method for Torsion and Bending Deformation of Engine Blade |
投稿时间:2016-01-26 修订日期:2016-05-24 |
DOI:10.7520/1001-4888-16-017 |
中文关键词: 角度 位移 叶片 测量 弯扭耦合 |
英文关键词:angle displacement blade measurement torsion-bending coupling |
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中文摘要: |
扭转和弯曲变形测量可以确定叶片弯扭变形耦合的特征,为叶片弯扭耦合分析提供可用的试验手段。本文提出了一种发动机叶片扭转和弯曲变形同步测量的新方法,其中,扭转角度测量方法能更加灵活地应用于测量叶片类形状不规则构件的扭转变形,而弯曲变形测量方法解决了叶片变形方向未知且存在弯扭耦合时的叶片变形测量问题,从而可实现对叶片截面扭转和弯曲变形的同步测量。对上述测量方法进行了专门的验证试验,结果表明:与传统方法测量结果相比,扭转角度测量偏差小于 1%,挠度测量偏差小于 2%,满足工程测量精度要求。 |
英文摘要: |
Torsion and bending deformation measurement can determine the characteristics of blade bending-torsion coupling deformation, and then provide available experimental means for analysis of blade bending-torsion coupling. In this paper, a new method for synchronous measurement of torsion angle and bending displacement for an engine blade is presented. Thereinto, the method for torsion angle measurement can more flexiblely measure the torsion deformation of blade component with irregular shape; while the method for bending deformation measurement has solved the deformation measurement of blade with unknown deformation direction and torsion-bending coupling; thus the torsion and bending deformation synchronous measurement for blade section is realized. A special verification experiment was carried out for above-mentioned measurement method. Results show that compared with the results obtained from conventional measurement method, the deviation of torsion angle is less than 1%,and the deviation of deflection measurement is less than 2%, which meet the requirements of engineering measurement accuracy. |
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