Coupled Hydrocode Prediction of Underwater Explosion Damage
Abstract
Damage to a deformable underwater target is difficult to predict as a consequence of the stiffness of water. Targets that deform inwards create an additional volume that must be filled by the surrounding water, reducing the local pressure and unloading the structure. To capture this behavior for close in explosions requires a coupled fluid and structure analysis. The following paper describes such a coupled analysis and compares results to experiments on water filled cylinders. Examination of computation and experiment indicates that cavitation and the cavitation collapse play an important role in the cylinder transient flow field. Predicted mid-line pressure, velocity and deformation are in reasonable agreement with experiment. Numerical experiments indicate that uncertainties in the water equation of state, material model and explosive energy can have a significant influence on predicted velocities and deformations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1998
- Accession Number
- ADA363434
Entities
People
- Alan Luton
- Andrew Wardlaw Jr.
- Reid Mckeown
Organizations
- Naval Surface Warfare Center Indian Head Division