Study on Uncoupled Numerical Simulations for Response of Structures to Blast Loads

A numerical method of the uncoupled Eulerian-Lagrangian (UEL) for simulating the propagation and damage effects of blast wave in field tests was developed. The applicability and accuracy of the approach are investigated by analyzing the sensitivity of the model parameters. The results show that the shape of the pressure-time profile plays a significant role for the displacement-time curve in these simulations, where the loading should be considered as dynamic rather than impulsive. The structural responses based on the uncoupled Eulerian-Lagrangian approaches were found to be lower comparing to a pure Lagrangian simulation. It was demonstrated that structural ?exibility reduces the pressure loads and thus the structural response.