Anisotropic Elastoplasticity for Cloth, Knit and Hair Frictional Contact

How to read this

Category

Method: an anisotropic elastoplastic model for codimensional frictional contact

Contributions

• An anisotropic elastoplastic constitutive model resolving frictional contact for codimensional materials (cloth, knit, hair) within a continuum simulation
• A Material Point Method discretization with a novel return mapping and deformation-gradient update that enforces Coulomb friction across the codimensional manifold
• Handles dense self-contact and inter-object contact, simulating scenarios up to roughly one million degrees of freedom

Context

Extends continuum (MPM) simulation to thin and yarn-level structures, relating to yarn-level cloth modeling (Cirio et al., Yarn-Level Simulation of Woven Cloth) by treating contact via plasticity rather than explicit collision handling.Builds on: Yarn-Level Simulation of Woven Cloth

Correctness

Demonstrated on dense-contact cloth/knit/hair scenes at large degree-of-freedom counts; friction is modeled through an elastoplastic return mapping (an approximation of Coulomb contact), so physical accuracy and compute cost at scale are points a reader should weigh.

Clarity

Mathematically heavy; a first pass conveys the codimensional-friction-via-plasticity idea, with the constitutive model and return mapping needing later passes.

How to read it

First pass for the high-level idea of encoding frictional contact as anisotropic plasticity in MPM; reserve second and third passes for the return mapping and deformation-gradient update if you work in continuum simulation.