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作者:

Li, L. (Li, L..) | Cai, L.-G. (Cai, L.-G..) (学者:蔡力钢) | Guo, T.-N. (Guo, T.-N..) | Zhao, Y.-S. (Zhao, Y.-S..) (学者:赵永胜) | Liu, Z.-F. (Liu, Z.-F..) (学者:刘志峰)

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摘要:

Establishing the normal equivalent properties model of bolted joints by boundary condition, the equilibrium and compatibility conditions. Then obtain the first two natural frequencies and damping ratio by modal testing under the different preload, and identification the relationship between different preload and equivalent stiffness and damping of bolted joints. Finally, establishing the finite element model of including bolted joints by ANSYS soft and obtain the first natural frequencies and damping ratio, the error between the theoretical and experimental results of the model is less than 4.73%, it can be show the validity and feasibility of the proposed method. Besides, the studied results show that, in the test range of this paper, the stiffness and damping coefficient of the joint surfaces increase with the preload, and further proved the dynamic properties of a mechanical system are strong affected by the properties of bolted joints, especially in the case of the low preload.

关键词:

Bolted joints; Modal testing; Normal equivalent properties; Parameters identification

作者机构:

  • [ 1 ] [Li, L.]School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
  • [ 2 ] [Cai, L.-G.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Guo, T.-N.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
  • [ 4 ] [Zhao, Y.-S.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
  • [ 5 ] [Liu, Z.-F.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China

通讯作者信息:

  • [Li, L.]School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

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来源 :

Journal of Beijing University of Technology

ISSN: 0254-0037

年份: 2013

期: 5

卷: 39

页码: 660-665

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