GDN-21 DYNAMIC VIBRATION ANALYSIS OF HELICAL GEAR SYSTEM(GEAR DYNAMICS AND NOISE)

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概要

• 論文の詳細を見る

• Through the improvement of gear parameter design and manufacturing processes directed at reducing transmission error, the gear noise level has been continually reduced in recent years. Demands for reducing gear noise are continually becoming more stringent, but the improvement of transmission error of gear pairs for gear noise reduction is nearing its limit. It has become increasingly difficult to estimate gear noise on the basis of transmission error, especially in high-frequency bands. In addition to these usual methods, there is a greater need to recognize the gear train itself as a transmitter of vibration and adopt approaches in which improvements are made to the gear train for the purpose of reducing gear noise. In this paper we present a new method of analyzing the vibration of a helical gear system, which makes it possible to predict the influence of the entire gear train (consisting of the gear blanks, shafts, bearings and the gears themselves) on gear noise. To reproduce as closely as possible the real operating condition of a helical gear system, we have developed a model with twelve degrees of freedom. It is represented by two equivalent masses coupled with the tooth mesh stiffness. In this method, the equivalent masses and the equivalent stiffness of gear trains were estimated with simplified finite element models. It was verified that the gear vibrations simulated with this method correlated well with measured gear noise. In this vibration analysis, it was found that the influence of the gear train as a whole on gear noise was as great as that of the gears themselves and that gear vibration was more sensitive to tooth surface modifications than transmission error. One of the tooth surface modifications that was effective in reducing gear vibration is described. In addition, a simplified prediction of the high-frequency gear noise level made with this method is presented.

• 一般社団法人日本機械学会の論文
• 2001-11-15

著者

• Morikawa Kunihiko

  Nissan Motor Co. Ltd.

• Morikawa Kunihiko

  Nissan Research Center Nissan Motor Co. Ltd.

• MORI Atsuhiro

  Nissan Research Center, Nissan Motor Co., Ltd.

• NISHIHARA Ryuta

  Nissan Research Center, Nissan Motor Co., Ltd.

• Mori Atsuhiro

  Nissan Research Center Nissan Motor Co. Ltd.

• Nishihara Ryuta

  Nissan Research Center Nissan Motor Co. Ltd.

関連論文

• GDN-13 TRANSMISSION ERROR PREDICTION METHOD OF PLANETARY GEARS TAKING ACCOUNT OF ALIGNMENT ERROR(DYNAMICS AND NOISE PROBLEMS OF GEARS AND GEAR BOXES)
• GDN-12 ESTIMATED METHOD OF THE PLANETARY-GEAR-NOISE FOR AUTOMATIC TRANSMISSION(DYNAMICS AND NOISE PROBLEMS OF GEARS AND GEAR BOXES)
• GDN-21 DYNAMIC VIBRATION ANALYSIS OF HELICAL GEAR SYSTEM(GEAR DYNAMICS AND NOISE)

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