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Technical Papers

Physical Phenomena

Wednesday, 27 July, 2:00 pm - 3:30 pm, Anaheim Convention Center, Ballroom C
Session Chair: Adam Bargteil, University of Maryland Baltimore County

A Semi-Implicit Material-Point Method for Continuum Simulation of Granular Materials

A new continuum-based method for simulating large-scale granular materials. Unlike previous work, this method fully accounts for the non-smooth Drucker-Prager rheology using a material-point method discretization. This discrete system is solved robustly and efficiently by leveraging frictional contact solvers originally developed in discrete contact mechanics.

Gilles Daviet
INRIA

Florence Bertails-Descoubes
INRIA Grenoble

Drucker-Prager Elastoplasticity for Sand Animation

This work extends the Material Point Method to simulate sand dynamics using an elasto-plastic continuum-based formulation. Using the Drucker-Prager plastic flow model naturally models the frictional interactions characteristic of sand dynamics and accurately recreates a wide range of visual sand phenomena with moderate computational expense.

Gergely Klar
University of California, Los Angeles

Theodore Gast
University of California, Los Angeles

Andre Pradhana
University of California, Los Angeles

Chuyuan Fu
University of California, Los Angeles

Craig Schroeder
University of California, Los Angeles

Chenfanfu Jiang
University of California, Los Angeles

Joseph Teran
University of California, Los Angeles, Walt Disney Animation Studios, The Walt Disney Company, Disney Research

Non-Smooth Developable Geometry for Interactively Animating Paper Crumpling

The first method to animate sheets of paper at interactive rates while automatically generating a plausible set of sharp features when the sheet is crumpled.

Camille Schreck
Centre national de la recherche scientifique

Damien Rohmer
CPE Lyon, Centre national de la recherche scientifique, INRIA, Université Grenoble-Alpes & Lyon

Stefanie Hahmann
Université Grenoble-Alpes & Lyon, Centre national de la recherche scientifique, INRIA

Marie-Paule Cani
Centre national de la recherche scientifique, INRIA, Université Grenoble-Alpes

Shuo Jin
The Chinese University of Hong Kong

Charlie C.L. Wang
The Chinese University of Hong Kong

Jean-Francis Bloch
Centre national de la recherche scientifique, Université Grenoble-Alpes

Fast Approximations for Boundary-Element-Based Brittle Fracture Simulation

A method for estimating stress-intensity factors in a brittle fracture simulation based on the surface displacement field, as well as approximating the additional displacement due to growing fractures. This results in a fast quasi-static fracture simulation, which is coupled to a rigid-body dynamics system.

David Hahn
IST Austria

Chris Wojtan
IST Austria