外部弾性・減衰要素に支持されたヘリングボーン動圧気体軸受の運転安定限界特性(機械要素,潤滑,設計,生産加工,生産システムなど)

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タイトル別名
  • Stability Threshold of Herringbone Grooved Aerodynamic Journal Bearings with External Stiffness and Damping Elements(Machine Elements, Design and Manufacturing)
  • 外部弾性・減衰要素に支持されたヘリングボーン動圧気体軸受の運転安定限界特性
  • ガイブ ダンセイ ゲンスイ ヨウソ ニ シジ サレタ ヘリングボーンドウ アツキタイ ジクウケ ノ ウンテン アンテイ ゲンカイ トクセイ

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抄録

Herringbone grooved aerodynamic journal bearings have better stability characteristics than plane aerodynamic journal bearings. In addition, the use of the flexibly supported bearings is one of the efficient way to improve the bearing stability. Therefore, the combination bearing systems have prospects of realization of ultra-high-speed operations. The purpose of this work is to evaluate the effect of the external stiffness and damping elements on the bearing stability. The Voigt rheological model was used for the external elements, in which the stiffness and the damping were treated as the linear elements. It was cleared that the stability boundary of the herringbone grooved aerodynamic journal bearings supported by the suitable stiffness and damping elements can be heightened more than three times compared with the rigidly supported bearings.

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