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Null Lagrangians for nematic elastomers


In this paper, we calculate all possible null Lagrangians (null energies) for the mechanics of a distinguished class of continua, the nematic elastomers. The calculation is done in order to help to relate different physically equivalent theories of nematic elastomers. We discuss both local and global (hence topological) aspects of the problem.

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Translated from Fundamental’naya i Prikladnaya Matematika (Fundamental and Applied Mathematics), Vol. 10, No. 1, Geometry of Integrable Models, 2004.

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Saccomandi, G., Vitolo, R. Null Lagrangians for nematic elastomers. J Math Sci 136, 4470–4477 (2006).

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  • Liquid Crystal
  • Lagrangian Density
  • Total Space
  • Material Space
  • Coordinate Expression