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- W2072006279 abstract "In a nematic elastomer the deformation of the polymer network chains is coupled to the orientational order of the mesogenic groups. Statistical arguments have derived the so-called neoclassical free energy that models this coupling. Here we show that the neoclassical model supplemented by the usual Frank energy predicts incompatible network strains associated with the formation of standard nematic textures. The incompatibility is measured by the Riemann curvature tensor, which we find to be nonzero for both radial hedgehog defects and escaped disclinations of strength +1 in circular cylinders. Analogous problems for conventional nonlinearly elastic solids do not possess solutions with such incompatibilities. Compatibility in nematic elastomers would require either more complicated nematic textures in elastomers than in conventional (polymeric and low molecular weight) liquid crystals or a free-energy density more complicated than the neoclassical expression." @default.
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- W2072006279 date "2006-01-11" @default.
- W2072006279 modified "2023-09-23" @default.
- W2072006279 title "Incompatible strains associated with defects in nematic elastomers" @default.
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- W2072006279 doi "https://doi.org/10.1063/1.2149857" @default.
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