Numerical Simulation Capabilities for Ground Shock Prediction due to Subsurface Explosion
The International Conference on Civil and Architecture Engineering
The ground shock produced by subsurface explosion near buried structures generally represents the dominant threat to these facilities. Due to various constraints, pertinent experimental data are extremely scarce. Adequately detailed numerical simulation thus becomes a desirable alternative. The use of commercially available codes, which are capable of solving non-linear dynamic problems, validated against proven prediction techniques and experimental data, can provide a cost-effective means of
... effective means of examining the highly dynamic processes involved in the subsurface explosion and ground shock propagation. This paper sets out to examine the potential of numerical analysis for investigating ground shock phenomena from underground explosion in different sites. The finite element code AUTODYN, which is available in 2-dimensional (2D) and 3-dimensional (3D) formats was employed. The study presents best material models necessary to produce good correlation with free filed resultants obtained from filed tests and CONWEP, an established experimentally-based prediction technique. The validated numerical model is then used to study the ground shock propagation in three different rock types; hard, moderate and soft rocks.