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http://dx.doi.org/10.12989/sem.2018.65.1.069

Free vibration analysis of concrete arch dams by quadratic ideal-coupled method  

Rezaiee-Pajand, Mohammad (Department of Civil Engineering, Ferdowsi University of Mashhad)
Sani, Ahmad Aftabi (Department of Civil Engineering, Ferdowsi University of Mashhad)
Kazemiyan, Mohammad Sadegh (Department of Civil Engineering, Ferdowsi University of Mashhad)
Publication Information
Structural Engineering and Mechanics / v.65, no.1, 2018 , pp. 69-79 More about this Journal
Abstract
This paper is devoted to two new techniques for free vibration analysis of concrete arch dam-reservoir systems. The proposed schemes are quadratic ideal-coupled eigen-problems, which can solve the originally non-symmetric eigen-problem of the system. To find the natural frequencies and mode shapes, a new special-purpose eigen-value solution routine is developed. Moreover, the accuracy of the proposed approach is thoroughly assessed, and it is confirmed that the new scheme is very accurate under all practical conditions. It is also concluded that both decoupled and ideal-coupled strategy proposed in the previous works can be considered as special cases of the current more general procedure.
Keywords
arch dam; fluid-structure interaction; decoupled method; ideal-coupled method; quadratic ideal-coupled method; subspace iteration method;
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Times Cited By KSCI : 4  (Citation Analysis)
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