Numerical simulation of surface explosions over dry, cohesionless soil
2012; Elsevier BV; Volume: 43; Linguagem: Inglês
10.1016/j.compgeo.2012.02.007
ISSN1873-7633
Autores Tópico(s)Laser-Plasma Interactions and Diagnostics
ResumoNumerical modeling of the effects of explosions relies on suitable material models appropriate for large deformation problems. Available results of a wide range of static and dynamic tests on Nevada #120 sand, completed as part of an earlier project (VELACS), were utilized to calibrate a numerical model for sand, suitable for modeling surface explosions. A fully-coupled Euler–Lagrange Interaction was utilized to correctly model pressures created by the explosion simultaneously with the large deformations in the soil. The model was used to study two cases – the first with a 2-D axisymmetric case of crater formation; and the second with a 3-D case of surface explosion above an underground tunnel. The results of numerical analyses were found to closely match those from other analyses, field tests, and centrifuge model tests.
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