Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Earthquakes and Structures Volume 3, Number 3, June-August 2012 , pages 533-548 DOI: https://doi.org/10.12989/eas.2012.3.3.533 |
|
|
|
Dynamic analysis of concrete gravity dam-reservoir systems by wavenumber approach in the frequency domain |
||
Vahid Lotfi and Ali Samii
|
||
| Abstract | ||
| Dynamic analysis of concrete gravity dam-reservoir systems is an important topic in the study of fluid-structure interaction problems. It is well-known that the rigorous approach for solving this problem relies heavily on employing a two-dimensional semi-infinite fluid element. The hyper-element is formulated in frequency domain and its application in this field has led to many especial purpose programs which were demanding from programming point of view. In this study, a technique is proposed for dynamic analysis of dam-reservoir systems in the context of pure finite element programming which is referred to as the wavenumber approach. In this technique, the wavenumber condition is imposed on the truncation boundary or the upstream face of the near-field water domain. The method is initially described. Subsequently, the response of an idealized triangular dam-reservoir system is obtained by this approach, and the results are compared against the exact response. Based on this investigation, it is concluded that this approach can be envisaged as a great substitute for the rigorous type of analysis. | ||
| Key Words | ||
| concrete gravity dams; wavenumber; absorbing boundary conditions; truncation boundary | ||
| Address | ||
| Vahid Lotfi and Ali Samii: Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran | ||