A Contact Proxy Splitting Method for Lagrangian Solid-Fluid Coupling

We present a robust and efficient method for simulating Lagrangian solid-fluid coupling based on new operator splitting strategy. use variational formulations to approximate fluid properties interactions, introduce unified two-way formulation SPH fluids FEM solids using interior point barrier-based frictional contact. split the resulting optimization problem into phase solid-coupling novel time-splitting approach with augmented contact proxies , propose custom linear solvers. Our technique accounts interaction nonlinear hyperelastic objects of different geometries codimensions, while maintaining an algorithmically guaranteed non-penetrating criterion. Comprehensive benchmarks experiments demonstrate efficacy our method.