Fair enough.... I'd like to think that since the infinitesimal strain tensor is just a simplified version of the Green-Lagrange tensor (really, some usually-small terms just get assumed to be zero), that the Paraview designers utilized a fully-designed Green-Lagrange formulation, which will approximate to the infinitesimal strain tensor then the strains are small...
But it'd be great to get a definitive answer.. otherwise I ened to think about creating my own filter to determine the finite strain tensor. Thanks for the comment, Tim
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