“Power Plastics: A Hybrid Lagrangian/Eulerian Solver for Mesoscale Inelastic Flows” by Qu, Li, Yang, Jiang and Goes
Conference:
Type(s):
Title:
- Power Plastics: A Hybrid Lagrangian/Eulerian Solver for Mesoscale Inelastic Flows
Session/Category Title: Simulation and Animation of Natural Phenomena
Presenter(s)/Author(s):
Abstract:
We 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.
