Dassault Systèmes’ SIMULIA demonstrates how the virtual twin experience on the 3DEXPERIENCE platform aims to transform structural integrity analysis in submarine engineering. Submarines operate in one of the most demanding environments on earth, where hulls must endure intense megapascal-level water pressure, repeated pressurization-depressurization cycles that induce fatigue cracking, and the destructive shockwaves of underwater explosions (UNDEX) making structural integrity analysis a critical engineering priority.
To address these challenges, the virtual twin, a complete digital replica of the submarine and its systems is used alongside Finite Element Analysis (FEA) within the Steel Structures Engineer role, enabling assessment of static linear and non-linear analyses, buckling, creep, thermal behavior, and fatigue life across individual macro blocks of the submarine casing.
The unified modeling and simulation (MODSIM) approach aims to enable seamless CAD-to-simulation transfer via CATIA, while Acoustic FEA models shockwave propagation and cavitation effects from UNDEX events on bulkheads and stiffeners. Ultimately, this approach aims to identify structural vulnerabilities before physical prototyping or sea trials, reducing the risk of costly post-manufacturing rework.
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