Abstract
The matrix model updating problem (MUP), considered in this paper, concerns updating a symmetric second-order finite element model so that the updated model reproduces a set of measured or given eigenvalues and eigenvectors, and preserves the symmetry, positive semidefiniteness and sparsity of the original model simultaneously. By exploiting the special structure offered by the constraint set, the optimization problem for MUP is formulated in such a way that the proximal point-like method can be used to solve the equivalent problem. We show that the proposed method converges globally and numerical results show that the proposed method works well for incomplete measured data.
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Acknowledgments
We are grateful to the referees for useful comments and suggestions. This research was supported by the National Natural Science Foundation of China under Grant Nos. 11271117, 11371073 and 11371072.
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Communicated by Ruben Spies.
Supported by the National Natural Science Foundation of China under Grant Nos. 11271117, 11371073 and 11371072.
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Zhao, K., Liao, A. & Yao, G. A proximal point-like method for symmetric finite element model updating problems. Comp. Appl. Math. 34, 1251–1268 (2015). https://doi.org/10.1007/s40314-014-0176-1
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DOI: https://doi.org/10.1007/s40314-014-0176-1
Keywords
- Model updating
- Proximal point method
- Quadratic eigenvalue problem
- Partially prescribed eigenvalue problem