Inversion alleviation for stable elastic body simulation

Jae Hyun Lee, Seung wook Kim, Kiwon Um, Min Hyung Kee, Jung Hyun Han

Research output: Contribution to journalArticlepeer-review


In general, it is not easy to simulate an elastic body that undergoes large deformations. Especially when its elements are inverted or tangled, that is, when its vertices penetrate its polygons, simulation often fails. In this paper, we propose a simple yet highly effective method for alleviating the inversion problems of elastic bodies. Our experiments made with typical optimization-based solvers demonstrate that the proposed method successfully stabilizes the solvers and produces visually plausible motions. We believe that our method can be widely adopted by a variety of state-of-the-art elastic-body simulators thanks to its simplicity.

Original languageEnglish
Article numbere2183
JournalComputer Animation and Virtual Worlds
Issue number3-4
Publication statusPublished - 2023 May 1

Bibliographical note

Funding Information:
This research was supported by the Ministry of Science and ICT, Korea, under the ICT Creative Consilience Program (IITP‐2023‐2020‐0‐01819), ITRC (Information Technology Research Center) Support Program (IITP‐2023‐2020‐0‐01460) and the grant No. 2020‐0‐00861.

Publisher Copyright:
© 2023 John Wiley & Sons Ltd.


  • elasticity
  • inversion
  • optimization
  • physically-based simulation

ASJC Scopus subject areas

  • Software
  • Computer Graphics and Computer-Aided Design


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