@InProceedings{LiesenfeldStol:1996:DyAnEl,
author = "Liesenfeld, Rog{\'e}rio L. W. and Stolfi, Jorge",
title = "Dynamic animation of elastic bodies",
booktitle = "Anais...",
year = "1996",
editor = "Velho, Luiz and Albuquerque, Arnaldo de and Lotufo, Roberto A.",
pages = "265--272",
organization = "Simp{\'o}sio Brasileiro de Computa{\c{c}}{\~a}o Gr{\'a}fica e
Processamento de Imagens, 9. (SIBGRAPI)",
publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
address = "Porto Alegre",
abstract = "We describe an animation system that simulates the dynamics of
viscoelastic bodies subject to equality and inequality
constraints. The equations of motion are derived from Lagrange's
equation, and constraint forces are computed by the method of
Lagrange multipliers. Each elastic body is modeled as a collection
of tetrahedral finite elements whose deformation is restricted to
affine transformations of their rest shapes. We use an original
non-linear formula for the elastic forces, especially devised to
prevent elements from collapsing to zero or negative volume. We
also describe a general algorithm to detect violation of
inequality constraints. For collisions, in particular, we use the
optimization technique of Lin and Manocha to cut the detection
time from quadratic to almost linear. Collisions are handled by
temporary contact springs.",
conference-location = "Caxambu",
conference-year = "29 out. - 1 nov. 1996",
isbn = "85-244-0103-6",
language = "en",
organisation = "SBC - Sociedade Brasileira de Computa{\c{c}}{\~a}o; UFMG -
Universidade Federal de Minas Gerais",
ibi = "83LX3pFwXQZW44Lb/d4TUp",
url = "http://urlib.net/ibi/83LX3pFwXQZW44Lb/d4TUp",
targetfile = "a82.pdf",
type = "Anima{\c{c}}{\~a}o e Multim{\'{\i}}dia",
urlaccessdate = "2021, Dec. 03"
}