This is the video accompanying our paper : "A Practical Method for Animating Anisotropic Elastoplastic Materials" By Schreck, Wojtan Computer Graphics Forum (Eurographics 2020)

project page: https://visualcomputing.ist.ac.at/pub...

Abstract: This paper introduces a simple method for simulating highly anisotropic elastoplastic material behaviors like the dissolution of fibrous phenomena (splintering wood, shredding bales of hay) and materials composed of large numbers of irregularly-shaped bodies (piles of twigs, pencils, cards, papers, coins, leaves, or fish). We introduce a simple transformation of the anisotropic problem into an equivalent isotropic one, and we solve this new “fictitious” isotropic problem using an existing MPM simulator. Our approach results in minimal changes to existing simulators, and it allows us to re-use popular isotropic plasticity models like the Drucker-Prager yield criterion instead of inventing new anisotropic plasticity models for every phenomenon we wish to simulate. We also introduce a method for adjusting the material frame over time, as well as some practical techniques for rendering these animations.