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A simple approach to nonlinear tensile stiffness for accurate cloth simulation

Pascal Volino 1 Nadia Magnenat-Thalmann 1 François Faure 2 
2 EVASION - Virtual environments for animation and image synthesis of natural objects
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology
Abstract : Recent Particle System models have evolved toward accurate representation of elastic stiffness based on continuum mechanics, converging to formulations that make them quite analogous to fast Finite Element methods. These formulations usually involve the linearization of tensors that help their formulation in the context of linear elasticity. Toward our objective of simulating the nonlinear properties of cloth accurately, we show through this work that this linearization can indeed be suppressed and replaced by adapted strain-stress laws relating precisely the nonlinear behavior of the material. This leads to very streamlined computations that are particularly efficient for simulating the nonlinear anisotropic tensile elasticity of deformable surfaces. Through a simple and efficient implementation using the Particle System formalism, we demonstrate the efficiency of this method with examples related to garment simulation.
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Submitted on : Wednesday, December 2, 2009 - 11:31:13 AM
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Pascal Volino, Nadia Magnenat-Thalmann, François Faure. A simple approach to nonlinear tensile stiffness for accurate cloth simulation. ACM Transactions on Graphics, Association for Computing Machinery, 2009, 28 (4), pp.Article No. 105. ⟨10.1145/1559755.1559762⟩. ⟨inria-00394466⟩



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