Abstract:
"Underwater explosion testing of catamaran-likestructure vs. simulation and feasibility of using scaling law"
This study compares test and simulation results for the impact of an underwater explosion on a catamaran-like aluminum structure. The simulation utilizes the LS-DYNA code with the ALE (arbitrary Lagrangian-Eulerian) method, and a finite element model is created for fluid and structure using TrueGrid and VPG, respectively, incorporating FSI (fluid-structure interaction) techniques. The research also investigates the dynamic response of the structure using velocity, acceleration, and blast pressure sensors to measure the effects of shock waves and bubble pulse pressure. Small-scale underwater explosion experiments were conducted, and the procedures are deemed applicable to scaled-down ship shock tests, thus verifying the feasibility of using the scaled-down method through simulation.
