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Unusual couplings in elastic tubes - negative poisson effect and overwinding on being stretched

Ajeet Kumar's picture

We demonstrate intersting extension-torsion-inflation coupling in intrinsically twisted chiral tubes. In particular, we show that by tuning its intrinsic twist and the material constants, such tubes can show negative poison effect on being stretched. Similarly, such tubes can overwind initially when stretched - the same unusual behavior has been reported earlier when a DNA molecule is stretched. See the attached paper which will appear soon in the Journal of Elasticity.

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