Easy Mechanical Simulation using Frame-based Meshless Deformation

English

Séminaire Modèles et Algorithmes Déterministes: EDP-MOISE

8/11/2012 - 11:00 Mr François Faure (LJK) Salle 1 - Tour IRMA

A new method to simulate deformable objects with heterogeneous material properties and complex geometries using an arbitrary number of control frames is presented. Given a volumetric map of the material properties of an object and a number of control nodes, a distribution of the nodes is computed automatically, as well as the associated shape functions. Reference frames are attached to the nodes, and deformations are applied to the object using linear blend skinning. A continuum mechanics formulation is derived from the displacements and the material properties. We introduce novel material-aware shape functions in place of the tradi- tional radial basis functions used in meshless frameworks. These allow coarse deformation functions to very efficiently resolve non-uniform stiffnesses. Complex models can thus be simulated at high frame rates using a small number of control nodes. We present applications to physical simulation and image registration.

Bio:
François Faure graduated in Mechanical Engineering at École Normale Supérieure de Cachan in 1993. He obtained a PhD in Computer Graphics tutored by Claude Puech at Université Joseph Fourier (UJF), Grenoble, in 1997. After a post-doc at Technical University of Vienna, he became an Assistant Professor in Computer Graphics at UJF in 1999, and a Full Professor in 2011. His research interest include the simulation of rigid and deformable solids, collision detection and response, and software architecture for simulators. He is the lead architect of the SOFA simulation library.