Abstract:
This study investigates the hydrodynamic effects of underwater explosions (UNDEX) on ring-stiffened cylindrical structures using an advanced finite element modeling approach. Utilizing the Arbitrary Lagrangian-Eulerian (ALE) method in LS-DYNA, the research simulates the complex fluid-structure interactions resulting from shock waves and bubble dynamics produced by TNT detonations. Two structural configurations—rectangular and tee ring-stiffened cylindrical shells—are subjected to various parametric changes in stiffener geometry to explore their tripping instabilities and overall deformation patterns. The simulations reveal how shape, material properties, and configuration significantly influence the dynamic response under high-pressure hydrodynamic loads. The outcomes guide the optimization of stiffener dimensions for enhanced structural resistance to underwater shock events.
