Dynamic Behaviour of Cylindrical Shells Immersed in Fluid Media

The Submerged Floating Tunnel (SFT) emerges as an innovative and futuristic alternative for underwater transportation, offering enhanced connectivity across deep and wide water bodies while preserving the natural beauty and functionality of marine ecosystems. Its development represents a pioneering solution in civil and marine infrastructure, integrating advanced structural and hydrodynamic principles. The structural design of an SFT is inherently a multidisciplinary challenge, involving elements from structural engineering, fluid mechanics, hydrodynamics, marine engineering, and finite element analysis (FEA). This study investigates the dynamic behaviour of a submerged cylindrical shell, simulating an SFT, under the influence of underwater explosion loading. Using advanced simulation tools within ANSYS software, multiple design configurations were analyzed to evaluate the tunnel's structural response in terms of deformation and stress distribution. By systematically varying tunnel length, tether spacing, and tether angle, this project aims to identify optimal configurations that minimize damage and enhance the stability of SFT systems under extreme dynamic loading conditions.