Validation of constrained fluid-debris-structure interaction in extreme hydrodynamic events using dualsphysics and chrono

Extreme hydrodynamic events, such as tsunamis (Mori et al., 2011; Sassa et al., 2019), have a significant impact on coastal communities and ecosystems. Impacts, from entrained solid objects such as cars, hydropoles, containers, etc., on structures increase the loading, thus potentially causing additional damage (Naito et al., 2014). These loads are often crucial to sustainable designs making them of particular relevance for coastal structures and infrastructures (Stolle et al., 2018; De Iasio et al., 2023) due to their higher exposure to e.g., containers transport hazard (Naito et al., 2014; Koh et al., 2023). Due to their nature, Lagrangian numerical models have recently been used to simulate this type of problems since large deformations and transport processes do not need complex techniques to be implemented in simulations like for Eulerian mesh-based methods. More specifically Smoothed Particles Hydrodynamics (SPH) models coupled with the Multiphysics model CHRONO have recently demonstrated their capability in accurately simulating debris transport (Ruffini et al., 2021, 2023). Using the aforementioned numerical approach, this study aims both at validating numerical strategies to represent complex constraint conditions for the impacting debris as well as investigating the complex fluid-debris-structure interaction, including post impact rotation of the debris and subsequent impacts