filename     : Kau09b.pdf
entry        : toappear / inproceedings
conference   : SIGGRAPH 2009, New Orleans, USA, August 3-7, 2009
pages        : ?
year         : 2009
month        : August
title        : Enrichment Textures for Detailed Cutting of Shells
subtitle     :
author       : Peter Kaufmann and Sebastian Martin and Mario Botsch and Eitan Grinspun and Markus Gross
booktitle    : SIGGRAPH '09: ACM SIGGRAPH 2009 papers
location     : New Orleans, Louisiana, USA
ISSN/ISBN    : 
editor       : 
publisher    : ACM Press / ACM SIGGRAPH
publ.place   : New York, NY, USA
volume       : 28
issue        : 3
language     : english
keywords     : FEM, Discontinuous Galerkin, Shells, XFEM, Cutting, Fracturing, Enrichment
abstract     : We present a method for simulating highly detailed cutting and fracturing
of thin shells using low-resolution simulation meshes. Instead
of refining or remeshing the underlying simulation domain
to resolve complex cut paths, we adapt the extended finite element
method (XFEM) and enrich our approximation by customdesigned
basis functions, while keeping the simulation mesh unchanged.
The enrichment functions are stored in enrichment textures,
which allows for fracture and cutting discontinuities at a resolution
much finer than the underlying mesh, similar to image textures
for increased visual resolution. Furthermore, we propose harmonic
enrichment functions to handle multiple, intersecting, arbitrarily
shaped, progressive cuts per element in a simple and unified
framework. Our underlying shell simulation is based on discontinuous
Galerkin (DG) FEM, which relaxes the restrictive requirement
of C1 continuous basis functions and thus allows for simpler, C0
continuous XFEM enrichment functions.