Eigenstructure assignment in vibrating systems based on receptances

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• 作者：Zihao Liu ; Wanyou Li ; Huajiang Ouyang ; Donghua Wang
• 关键词：Eigenstructure assignment ; Structural modification ; Receptance ; Mass–spring system ; Undamped systems
• 刊名：Archive of Applied Mechanics (Ingenieur Archiv)
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：85
• 期：6
• 页码：713-724
• 全文大小：1,212 KB
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• 作者单位：Zihao Liu (1)
  Wanyou Li (1)
  Huajiang Ouyang (2) (3)
  Donghua Wang (1)
  
  1. College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, People’s Republic of China
  2. School of Engineering, University of Liverpool, Liverpool, UK
  3. State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, Dalian, 16023, People’s Republic of China
  
• 刊物类别：Engineering
• 刊物主题：Theoretical and Applied Mechanics
  Mechanics
  Complexity
  Fluids
  Thermodynamics
  Systems and Information Theory in Engineering
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0681

文摘

This paper presents a method for structural modifications for achieving desired eigenstructures based on receptances, by adding multiple mass–spring systems to some locations of the primary system. This method has the benefit that not only neither analytical nor modal models are needed, but also the original mass and stiffness of the primary system are maintained. Moreover, when a complex structure or machine is designed for some special functions so that its inner structure is not allowed to be modified, it is an effective way in practice to achieve desired dynamical performance resulted from adding several external simple substructures. The theory is presented in this paper, which is suitable for linear undamped systems. Numerical experiment is set up, and the results of the modifications are compared with the method proposed by Braun and Ram. Both theoretical derivation and numerical results demonstrate the effectiveness of this method.