Underwater Blast Experiments and Modeling for Shock Mitigation
A simple but novel mitigation concept to enforce standoff distance and reduce shock loading on a vertical, partially-submerged structure is evaluated using scaled aquarium experiments and numerical modeling. Scaled, water tamped explosive experiments were performed using three gallon aquariums. The effectiveness of different mitigation configurations, including air-filled media and an air gap, is assessed relative to an unmitigated detonation using the same charge weight and standoff distance. Experiments using an air-filled media mitigation concept were found to effectively dampen the explosive response of the aluminum plate and reduce the final displacement at plate center by approximately half. The finite element model used for the initial experimental design compares very well to the experimental DIC results both spatially and temporally. Details of the experiment and finite element aquarium models are described including the boundary conditions, Eulerian and Lagrangian techniques, detonation models, experimental design and test diagnostics.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 992299
- Report Number(s):
- LLNL-CONF-425235; TRN: US201022%%272
- Resource Relation:
- Conference: Presented at: 14th International Detonation Symposium, Coeur D'alene, ID, United States, Apr 11 - Apr 16, 2010
- Country of Publication:
- United States
- Language:
- English
Similar Records
Response of a stainless steel cylinder with elliptical ends subjected to an off-center blast load
Response of containment vessels to explosive blast loading