Numerical simulation of surface explosions over dry,cohesionless soil |
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| Institution: | 1. Department of Mining Engineering, Faculty of Engineering, University of Kashan, Iran;2. School of Mining, College of Engineering, University of Tehran, Iran;3. Miduk Copper Mine, ShahrBabak, Kerman, Iran;1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;3. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China;4. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;5. Shanghai Pudong Project Development Co., Ltd, Shanghai 201210, China;1. National Building Research Institute, Technion, Haifa 32000, Israel;2. Faculty of Civil & Environmental Engineering, Technion, Haifa 32000, Israel |
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| Abstract: | Numerical 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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