Abstract
This paper shows the existence of a particular type of planar orthotropic material, here denoted for the sake of brevity as R 0-orthotropic. The number of independent elastic constants for these materials is three, and not four as for a general orthotropic layer, but these constants have only two orthogonal axes of symmetry. The way to obtain a R 0-orthotropic layer is discussed in the paper, along with the advantages in its use.
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Vannucci, P. A Special Planar Orthotropic Material. Journal of Elasticity 67, 81–96 (2002). https://doi.org/10.1023/A:1023949729395
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DOI: https://doi.org/10.1023/A:1023949729395