ABSTRACT
Precise modelling and simulation of the effects of blast occurrences, especially in or around the slope, is of interest in this study. Applications include minimizing casualties and improving buried pipeline survivability from attacks using improvised explosive tools. In the present study, coupled Eulerian-Lagrangian capability in FEM-based computer program ABAQUS/Explicit was used to simulate experimental tests in which the structural response to the detonation of a surface charge was characterized. Soil has been modeled as a three-phase porous media to accommodate various degrees of saturation. Lagrangian representation was used for the pipe, while Eulerian representation was used for the soil, explosive, and ambient air.
Detonation products were modeled using the Jones-Wilkins-Lee equation of state. The blast design parameter PPV (peak particle velocity) has been obtained for input parameters. The simulations agree favorably with the test results and produce higher adherence solutions than traditional analytical or empirical blast models.
