东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (8): 1174-1177.DOI: -

• 论著 • 上一篇    下一篇

非线性刚度振动传递路径系统灵敏度分析

赵群;张义民;赵晋芳;   

  1. 东北大学机械工程与自动化学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-08-15 发布日期:2013-06-22
  • 通讯作者: Zhao, Q.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA04Z442)

Sensitivity analysis of nonlinear stiffness vibration transmission path system

Zhao, Qun (1); Zhang, Yi-Min (1); Zhao, Jin-Fang (1)   

  1. (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-08-15 Published:2013-06-22
  • Contact: Zhao, Q.
  • About author:-
  • Supported by:
    -

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摘要： 针对振动传递路径系统的非线性问题,根据功率流理论、四端参数法建立振动传递路径系统的力学模型,进而得出系统的响应和功率流特性.研究当振动传递路径系统中分别存在材料非线性刚度和分段线性刚度时系统的等效刚度和隔振器导纳,并用灵敏度分析方法研究系统功率流对隔振器阻尼的灵敏度,对系统中存在材料非线性刚度和分段线性刚度时功率流的灵敏度进行分析.得出了系统特性对这些参数的敏感程度,清楚地表明了系统灵敏度的敏感区域,直观地给出了系统参数对系统功率流的贡献度,从而指导系统结构的优化.

关键词: 非线性刚度, 振动, 传递路径, 隔振系统, 功率流, 灵敏度

Abstract: Aiming at the nonlinear problem of the vibration transmission path system, a mechanics model is developed according to the powerflow theory and four-end parameter analysis so as to obtain the system responses and powerflow characteristics of a vibration transmission path system. The equivalent stiffness and isolator mobility are studied when the material's nonlinear stiffness and piecewise linear stiffness both exist in the system. The sensitivity of the system powerflow to the isolator damping and the sensitivity to both material's nonlinear stiffness and piecewise linear stiffness are discussed, thus giving the sensitivity of system characteristics to those parameters with the sensitive region clearly shown. As a result, how the system parameters contribute to the system powerflow is presented visually so as to guide the optimization of system architecture.

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