Structural Engineering and Mechanics

  • 제62권3호
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  • Pages.303-310
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  • 2017
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Reconstruction of structured models using incomplete measured data

  • Yu, Yan (School of Mathematical Sciences, Dalian University of Technology) ;
  • Dong, Bo (School of Mathematical Sciences, Dalian University of Technology) ;
  • Yu, Bo (School of Mathematical Sciences, Dalian University of Technology)
  • 투고 : 2016.07.11
  • 심사 : 2017.01.03
  • 발행 : 2017.05.10
⟨ 이전 논문 다음 논문 ⟩

초록

The model updating problems, which are to find the optimal approximation to the discrete quadratic model obtained by the finite element method, are critically important to the vibration analysis. In this paper, the structured model updating problem is considered, where the coefficient matrices are required to be symmetric and positive semidefinite, represent the interconnectivity of elements in the physical configuration and minimize the dynamics equations, and furthermore, due to the physical feasibility, the physical parameters should be positive. To the best of our knowledge, the model updating problem involving all these constraints has not been proposed in the existed literature. In this paper, based on the semidefinite programming technique, we design a general-purpose numerical algorithm for solving the structured model updating problems with incomplete measured data and present some numerical results to demonstrate the effectiveness of our method.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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