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Reference TypeConference Paper (Conference Proceedings)
Last Update1998: (UTC) administrator
Metadata Last Update2013: (UTC) administrator
Citation KeyLiesenfeldStol:1996:DyAnEl
TitleDynamic animation of elastic bodies
FormatImpresso, On-line.
Access Date2021, Nov. 30
Number of Files1
Size274 KiB
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Author1 Liesenfeld, Rogério L. W.
2 Stolfi, Jorge
EditorVelho, Luiz
Albuquerque, Arnaldo de
Lotufo, Roberto A.
Conference NameSimpósio Brasileiro de Computação Gráfica e Processamento de Imagens, 9 (SIBGRAPI)
Conference LocationCaxambu
Date29 out. - 1 nov. 1996
PublisherSociedade Brasileira de Computação
Publisher CityPorto Alegre
Book TitleAnais
Tertiary TypeArtigo
OrganizationSBC - Sociedade Brasileira de Computação; UFMG - Universidade Federal de Minas Gerais
History (UTC)2008-07-17 14:17:56 :: administrator -> banon ::
2010-08-28 20:04:50 :: banon -> administrator ::
2013-04-05 16:31:25 :: administrator -> banon :: 1996
2013-04-05 16:43:58 :: banon -> administrator :: 1996
2013-04-19 14:15:04 :: administrator -> banon :: 1996
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AbstractWe 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.
TypeAnimação e Multimídia
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