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DTSTAMP:20240214T070250Z
LOCATION:Meeting Room C4.8\, Level 4 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231215T144000
DTEND;TZID=Australia/Melbourne:20231215T145000
UID:siggraphasia_SIGGRAPH Asia 2023_sess171_papers_726@linklings.com
SUMMARY:Subspace Mixed Finite Elements for Real-Time Heterogeneous Elastod
 ynamics
DESCRIPTION:Technical Papers\n\nTy Trusty, Otman Benchekroun, and Eitan Gr
 inspun (University of Toronto); Danny M. Kaufman (Adobe, University of Tor
 onto); and David I.W. Levin (University of Toronto)\n\nReal-time elastodyn
 amic solvers are well-suited for the rapid simulation of ho\nmogeneous ela
 stic materials, with high-rates generally enabled by aggressive\nearly ter
 mination of timestep solves. Unfortunately, the introduction of strong\ndo
 main heterogeneities can make these solvers slow to converge. Stopping the
 \nsolve short creates visible damping artifacts and rotational errors. To 
 address\nthese challenges we develop a reduced mixed finite element solver
  that pre\nserves rich rotational motion, even at low-iteration regimes. S
 pecifically, this\nsolver augments time-step solve optimizations with auxi
 llary stretch degrees\nof freedom at mesh elements, and maintains consiste
 ncy with the primary\npositional degrees of freedoms at mesh nodes via exp
 licit constraints. We make\nuse of a Skinning Eigenmode subspace for our p
 ositional degrees of freedom.\nWe accelerate integration of non-linear ela
 stic energies with a cubature approx\nimation, placing stretch degrees of 
 freedom at cubature points. Across a wide\nrange of examples we demonstrat
 e that this subspace is particularly well suited\nfor heterogeneous materi
 al simulation. Our resulting method is a subspace\nmixed finite element me
 thod completely decoupled from the resolution of the\nmesh that is well-su
 ited for real-time simulation of heterogeneous domains.\n\nRegistration Ca
 tegory: Full Access\n\nSession Chair: Qixing Huang (University of Texas at
  Austin)
URL:https://asia.siggraph.org/2023/full-program?id=papers_726&sess=sess171
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