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The planar elastica, stress, and material stress

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GFSW01 - Form and deformation in solid and fluid mechanics

We revisit the classical problem of the planar Euler \emph{elastica} with applied forces and moments, and present a classification of the shapes in terms of tangentially conserved quantities associated with spatial and material symmetries.  We compare commonly used director, variational, and dynamical systems representations, and present several illustrative physical examples. 
We remark that an approach that employs only the shape equation for the tangential angle obscures physical information about the tension in the body.

This talk is part of the Isaac Newton Institute Seminar Series series.

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