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2008

Discrete elastic rods

8 years 10 months ago
Discrete elastic rods
We present a discrete treatment of adapted framed curves, parallel transport, and holonomy, thus establishing the language for a discrete geometric model of thin flexible rods with arbitrary cross section and undeformed configuration. Our approach differs from existing simulation techniques in the graphics and mechanics literature both in the kinematic description--we represent the material frame by its angular deviation from the natural Bishop frame-as well as in the dynamical treatment--we treat the centerline as dynamic and the material frame as quasistatic. Additionally, we describe a manifold projection method for coupling rods to rigidbodies and simultaneously enforcing rod inextensibility. The use of quasistatics and constraints provides an efficient treatment for stiff twisting and stretching modes; at the same time, we retain the dynamic bending of the centerline and accurately reproduce the coupling between bending and twisting modes. We validate the discrete rod model via q...
Miklós Bergou, Max Wardetzky, Stephen Robin
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TOG
Authors Miklós Bergou, Max Wardetzky, Stephen Robinson, Basile Audoly, Eitan Grinspun
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