Coupling total Lagrangian SPH–EISPH for fluid–structure interaction with large deformed hyperelastic solid bodies

In this work, we propose a two-way coupling technique between total Lagrangian smoothed particle hydrodynamics (SPH) method for Solid Mechanics and the explicit incompressible SPH (EISPH) to simulate fluid–structure interaction problems. solid part, framework guarantees that distribution keep stable correctly calculate deformation gradient thus elastic forces. The constitutive model follows hyperelastic formulations, stability of is enforced by Jameson–Schmidt–Turkel (JST) stabilization procedure. For fluid applied an EISPH formulation, which fully scheme based on projection capable providing accurate pressure distributions free-surface flows, while avoiding costly linear equations. same manner as fixed wall ghost (FWGP) approach, was here adapted include moving walls. addition, non-penetration condition rigorously reinforced through numerical algorithm avoid penetration every particle, including particles. Our then verified large deformed tension plate test, our forces series floating tests hydrostatic water column over thin infinite plate. Then, validated comparing it with experimental data dam break test in attacks rubber