Abstract
The Adaptively Shifted Integration (ASI) technique, using the relations between the locations of numerical integration points and those of plastic hinges, could produce the highest computational efficiency in the finite element analyses of framed structures including dynamic collapse analyses. In this paper, the ASI technique with the linear Timoshenko beam element is applied to the blast demolition analysis of framed structures. As the occurrence of extremely large rotations and strains are anticipated in the analysis, the updated Lagrangian formulation is used as the incremental theory. In order to maintain the high computational efficiency, the dynamic explicit code is chosen for the time integration.