Radin Espandar - Ph.D. Candidate, Civil Eng. Dept., Amirkabir University, Tehran, Iran
Vahid Lotfi - Assistant Professor, Civil Eng. Dept , Amirkabir University:Tehran, Iran

There are different approaches in nonlinear dynamic analysis of arch dams. This paper concentrates on the results obtained by a finite element program developed based on smeared crack modeling of concrete. An idealized symmetric model of a typical concrete arch dam is considered and the behavior of nonlinear model is compared and discussed thoroughly against the linear case