Power Plastics: A Hybrid Lagrangian/Eulerian Solver for Mesoscale Inelastic Flows
DescriptionWe propose a novel hybrid Lagrangian/Eulerian method for simulating inelastic materials that generates high-quality particle distributions with strict volume control. At its core, our approach integrates an updated Lagrangian time discretization of continuum mechanics with the Power Particle-In-Cell geometric representation of continuum materials [Qu et al. 2022]. As a result, we represent material points as optimized density kernels that precisely track the varying particle volumes both spatially and temporally. For efficient CFL-rate simulations, we implicitly time integrate the system with a non-linear Gauss-Seidel solver inspired by X-PBD [Macklin et al. 2016], viewing Eulerian nodal velocities as primal variables. We demonstrate the efficacy and versatility of our method with mesoscale (10-100k grains) simulations of bubbles, sands, liquid, and foams.
Event Type
Technical Papers
TimeTuesday, 12 December 20239:30am - 12:45pm
LocationDarling Harbour Theatre, Level 2 (Convention Centre)
