Vibration of Impellers : 5th report, Measurement of Resonant Vibratory Stresses of an Impeller and Pressure Distribution Due to Aerodynamic Excitation
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概要
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Impellers rotate at high speeds, and therefore in order to improve the efficiency of turbomachines it is necessary to take into account not only the static strength to withstand the centrifugal force but also the dynamic strength to withstand vibration in the design stage. In practice various kinds of exciting forces are applied to impellers, but in this investigation a screen with slots around its periphery is positioned in front of the impeller and the impeller is excited aerodynamically through this screen. The resonant vibratory stresses and the pressure distribution are measured simultaneously in resonant condition when the impeller is rotating at high speeds. The relationship between the resonant vibratory stresses and the pressure distribution is discussed in detail by analyzing the frequency variation of the two components.
- 一般社団法人日本機械学会の論文
著者
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Nagamatsu Akio
Tokyo Institute Of Technology
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MICHIMURA Seiichi
Tokyo Institute of Technology
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Nagamatsu Akio
Tokyo Instilute Of Technology
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ISHIKAWA Tetsuo
Tokyo Institute of Technology
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YAMAGUCHI Hiromasa
Komatsu Ltd. (Oyama Factory)
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- Vibration of Impellers : 5th report, Measurement of Resonant Vibratory Stresses of an Impeller and Pressure Distribution Due to Aerodynamic Excitation