The seismic assessment of concrete gravity dams is a dynamic problem that requires advanced numerical methods which account volved interaction phenomena and the strongly non-linear behaviour cracking concrete. The methods must be working in the time-domain be very efficient in…
The seismic assessment of concrete gravity dams is a dynamic problem that requires advanced numerical methods which account volved interaction phenomena and the strongly non-linear behaviour cracking concrete. The methods must be working in the time-domain be very efficient in order to keep computation time and data storage rea- sonable orders of magnitude. 1 1 This paper describes the non-linear fracture mechanics model rnn a•rn•"'"T in the 2D-FE-program DUCS (Dynamics of Unreinforced Concrete tures). Based on a discrete crack approach, the strain-softening micro-cracked concrete and aggregate interlock are taken into account. Some computational examples give evidence of the influence of ........... .., ............ _,...,. ... parameters (tensile strength, aggregate interlock, fracture energy) parameters (mesh).