Abstract
The results of finite element simulations for an explosive detonated 1 foot above the surface of an earthen embankment dam in New Mexico are presented in this study. The finite element model is constructed with the dynamic analysis software LS DYNA. Two LS DYNA material models (material model 14: soil and crushable foam with failure and material model 78: soil/concrete) are utilized to model the soil of the embankment dam. The responses of the embankment are compared to field values to identify a suitable material model between material model 14 and material model 78. Simulation results of pressure–time history, nodal velocity, and soil displacement are presented for both material models. The results of the simulations are also compared to previous explosive-induced soil cratering studies. It is shown that material model 78 is more suitable for embankment response characterization under blast loading.
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