en Optimal design Optimal design پژوهشي Research <p dir="ltr">This paper presents an efficient optimization procedure to find the optimal shapes of double curvature  arch  dams  considering  fluid–structure  interaction  subject  to  earthquake  loading. The optimization is carried out using a combination of the magnetic charged system search, big bang-big crunch algorithm and artificial neural network methods. Performing the finite element  analysis  during  the  optimization  process  is  time  consuming.  Back  propagation neural  network  is  utilized  to  reduce  the  computational  burden.  A  real-world  arch  dam  is considered as a numerical example to demonstrate the efficiency of the proposed method. The numerical results reveal the computational advantages of the new method for optimal <br> design of arch dams.</p> 227 243 http://ijoce.iust.ac.ir/browse.php?a_code=A-10-66-96&slc_lang=en&sid=1 S. Talatahari 18003194753284600947 18003194753284600947 Yes M. T. Aalami 18003194753284600948 18003194753284600948 No R. Parsiavash 18003194753284600949 18003194753284600949 No