MATERIAL POINT METHOD FOR SIMULATION OF GRANULAR MATERIALS

摘要

The disclosure provides an approach for simulating and rendering granular materials. A simulation application generates video frames depicting a granular material phenomenon using a strain based elasto-plastic constitutive model integrated with a hybrid Eulerian/Lagrangian material point method (MPM). The elasto-plastic constitutive model includes physical equation(s) which dictate forces that affect the granular material during the simulation. In particular, the constitutive model may include user-controllable parameters defining threshold(s) to start plastic deformation, as well as a hardening parameter which controls how fast the granular material packs under compression. The MPM is a procedure in which particles of the granular material and a background grid are coupled, with the grid being used to assist in computing forces dictated by the physical equation(s) of the elasto-plastic constitutive model. In one configuration, the grid may further be rendered with volumetric rendering to generate video frames depicting the granular material.

主权项

1. A computer-implemented method for simulating a granular material, the method comprising:
receiving states of particles of the granular material; and updating the states of the particles by computing, on a grid, forces dictated by a strain based elasto-plastic constitutive model; and rendering successive images of the granular material based on the updated states of the particles.