A new formulation of distinct element is presented, and a 3-noded triangle element is employed to simulate the dynamic response of the concrete gravity dam under strong earthquake loading. An explicit central difference time-marching scheme is adopted for time integration of the dynamic equation. In order to account for geometric non-linearity, Green＇s strain formula is applied for the method, and a Rayleigh damping model and a linear elastic material matrix are also used in this work. Contact force between particles is computed by the finite ...
