Impact of Fluid Column Collapse on Structures Using Higher-Order MPM

MPM is a large deformation numerical framework that is emerging to solve practical problems in geotechnical engineering, including water–soil–structure interaction problems. This paper aims to benchmark a higher-order B-spline MPM implementation in tandem with a volumetric strain smoothing algorithm to mitigate numerical locking. A set of column collapse problems is considered to assess the stability as the nearly incompressible fluid deforms during interaction with rigid and elastic walls. The results are compared to existing numerical results and experimental data from the literature. A final model is presented to assess the effect of a sliding wall on the overall impact and wall deflection. In conclusion, the stabilized high-order MPM framework is a promising framework to solve fluid–structure interaction problems.