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arXiv · 1911.05204

Locking-free Simulation of Isometric Thin Plates

Hsiao-yu Chen·Paul Kry·Etienne Vouga
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Abstract

To efficiently simulate very thin, inextensible materials like cloth or paper, it is tempting to replace force-based thin-plate dynamics with hard isometry constraints. Unfortunately, naive formulations of the constraints induce membrane locking---artificial stiffening of bending modes due to the inability of discrete kinematics to reproduce exact isometries. We propose a simple set of meshless isometry constraints, based on moving-least-squares averaging of the strain tensor, which do not lock, and which can be easily incorporated into standard constrained Lagrangian dynamics integration.

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Hsiao-yu Chen, Paul Kry, Etienne Vouga. 2019-11-12. Locking-free Simulation of Isometric Thin Plates. https://arxiv.org/abs/1911.05204

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