HAL (Le Centre pour la Communication Scientifique Directe) · 2005 · 81 citations · 0 references
EngineeringComputational EngineeringMechanical EngineeringComputational MechanicsFinite Element AnalysisFinite Element MethodsComputational Solid MechanicsFinite Element FormulationSolid Mechanics ApplicationsStructural Finite Element AnalysisFinite Deformation MechanicsFinite Element Deformation AnalysisFinite Element ModelingFlexible Body ModelingSoft Body SimulationStrain-displacement Relations
This paper discusses FEM-based simulations of soft bodies in terms of speed and robustness. To be physically plausible, three fundamental laws must be respected: rotational invariance, Newton's law and Euler's law. We show that precomputed strain-displacement matrices generate nonphysical torques which can lead to visual artifacts. We then derive the fastest FEM-based method meeting our criteria of plausibility and robustness and discuss their limitations.