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Volume 24 Issue 6
Jun.  1998
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Journal of Beijing University of Aeronautics and Astronautics  > 1998  >  24(6): 747-749.
Active-disturbance rejection control of multi-redundancy brushless DC motor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(5): 617-621. (in Chinese)
Citation: Yun Chao, Zong Guanghua, Jin Shudaet al. Study of Fatigue Strength Condition for Non-Symmetrical Circulation[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(6): 747-749. (in Chinese)
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Study of Fatigue Strength Condition for Non-Symmetrical Circulation

  • 1.

    Beijing University of Aeronautics and Astronautics,School of Mechanical Engineering and Automation

  • 2. Hebei Science and Technology Institute,Dept. of Civil Architecture

  • Received Date: 20 Mar 1998
  • Publish Date: 30 Jun 1998
    Abstract
  • The fatigue strength condition of component parts under non-symmetrical circulation is analysed for the tranditional design of mechanism in order to infer an expression about the fatigue strength condition. In terms of material mechanics, the working safe coefficient of components under the same circle feature is found by two points on the same projecting line in the endurance limit figure. Because the combined influence coefficient of components has only an effect on the stain amplitude (the vertical coordinate),the endurance limits of materials and components can't be located on the same projecting line. In view of this,the tranditional fatigue strength condition under non-symmetrical circulation is incorrect. Through the analysis of the figure of the endurance limit of components, a correct expression about the working safe coefficient of components is obtained.And further, the error between the expressions of two strength conditions is analysed. The conclusion shows that the design according to the original fatigue strength condition would cause greater losses.

     

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  • 1. 刘鸿文主编材料力学北京:高等教育出版社,1992119~134 2. 徐 灏主编机械设计手册.第2卷.北京:机械工业出版社,199160~98 3. 蒋智翔主编材料力学北京:清华大学出版社,1985299~313
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