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DTSTAMP:20240214T070242Z
LOCATION:Meeting Room C4.9+C4.10\, Level 4 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231212T145500
DTEND;TZID=Australia/Melbourne:20231212T151000
UID:siggraphasia_SIGGRAPH Asia 2023_sess141_papers_731@linklings.com
SUMMARY:Progressive Shell Quasistatics for Unstructured Meshes
DESCRIPTION:Technical Papers\n\nJiayi Eris Zhang (Stanford University, Ado
 be); Jérémie Dumas and Raymond Fei (Adobe); Alec Jacobson (University of T
 oronto, Adobe); Doug James (Stanford University); and Danny Kaufman (Adobe
 )\n\nThin shell structures exhibit complex behaviors critical for modeling
  and design across wide-ranging applications. To capture their mechanical 
 response requires finely detailed, high-resolution meshes. Corresponding s
 imulations for predicting equilibria with these meshes are expensive, wher
 eas coarse-mesh simulations can be fast but generate unacceptable artifact
 s and inaccuracies. The recently proposed progressive simulation framework
  [Zhang et al. 2022] offers a promising avenue to address these limitation
 s with consistent and progressively improving simulation over a hierarchy 
 of increasingly higher-resolution models. Unfortunately, it is currently s
 everely limited in application to meshes and shapes generated via Loop sub
 division. \n\nWe propose Progressive Shells Quasistatics to extend progres
 sive simulation to the high-fidelity modeling and design of all input shel
 l (and plate) geometries with unstructured (as well as structured) triangl
 e meshes. To do so we construct a fine-to-coarse hierarchy with a novel no
 nlinear prolongation operator custom-suited for curved-surface simulation 
 that is rest-shape preserving, supports complex curved boundaries, and ena
 bles the reconstruction of detailed geometries from coarse-level meshes. T
 hen, to enable convergent, high-quality solutions with robust contact hand
 ling, we propose a new, safe and efficient shape-preserving upsampling met
 hod that ensures non-intersection and strain-limits during refinement. Wit
 h these core contributions, Progressive Shell Quasistatics enables, for th
 e first time, wide-generality for progressive simulation including support
  for arbitrary curved-shell geometries, progressive collision objects, cur
 ved boundaries, and unstructured triangle meshes -- all while ensuring tha
 t preview and final solutions remain free of intersections. We demonstrate
  these features across a wide range of stress-tests and examples where pro
 gressive simulation captures the wrinkling, folding, twisting and buckling
  behaviors of frictionally contacting thin shells.\n\nRegistration Categor
 y: Full Access\n\nSession Chair: Weiwei Xu (State Key Laboratory of CAD&CG
 , Zhejiang Univerisity; State Key Lab of CAD and CG, Zhejiang University)
URL:https://asia.siggraph.org/2023/full-program?id=papers_731&sess=sess141
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