Fast Viscoelastic Behavior with Thin Features
Abstract
We introduce a method for efficiently animating a wide range of
deformable materials. We combine a high resolution surface mesh
with a tetrahedral finite element simulator that makes use of frequent
re-meshing. This combination allows for fast and detailed
simulations of complex elastic and plastic behavior. We significantly
expand the range of physical parameters that can be simulated
with a single technique, and the results are free from common
artifacts such as volume-loss, smoothing, popping, and the absence
of thin features like strands and sheets. Our decision to couple a
high resolution surface with low-resolution physics leads to efficient
simulation and detailed surface features, and our approach
to creating the tetrahedral mesh leads to an order-of-magnitude
speedup over previous techniques in the time spent re-meshing. We
compute masses, collisions, and surface tension forces on the scale
of the fine mesh, which helps avoid visual artifacts due to the differing
mesh resolutions. The result is a method that can simulate
a large array of different material behaviors with high resolution
features in a short amount of time.
Wojtan, C. and Turk, G. Fast viscoelastic behavior with thin features. SIGGRAPH 2008.