Momentum‐preserving inversion alleviation for elastic material simulation
This paper proposes a novel method that enhances the optimization‐based elastic body solver. The proposed method tackles the element inversion problem, which is prevalent in the prediction‐projection approach for numerical simulation of elastic bodies. At the prediction stage, our method alleviates...
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Published in | Computer animation and virtual worlds Vol. 35; no. 3 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Chichester
Wiley Subscription Services, Inc
01.05.2024
Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | This paper proposes a novel method that enhances the optimization‐based elastic body solver. The proposed method tackles the element inversion problem, which is prevalent in the prediction‐projection approach for numerical simulation of elastic bodies. At the prediction stage, our method alleviates inversions such that the subsequent projection solver can benefit in stability and efficiency. To prevent excessive suppression of predicted inertial motion when alleviating, we introduce a velocity decomposition method and adapt only the non‐rigid motion while preserving the rigid motion, that is, linear and angular momenta. Thanks to the respected inertial motion in the prediction stage, our method produces lively motions while keeping the entire simulation more stable. The experiments demonstrate that our alleviation method successfully stabilizes the simulation and improves the efficiency particularly when large deformations hamper the solver.
In this paper, we propose a novel method that enhances the prediction‐projection approach involved in the optimization‐based elastic body solver. At the prediction stage, our method alleviates inversions, allowing the subsequent projection solver to benefit from improved stability and efficiency. |
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ISSN: | 1546-4261 1546-427X |
DOI: | 10.1002/cav.2249 |