  We derive a large-strain plate model that allows to describe transient,
coupled processes involving elasticity and solvent migration, by performing a
dimensional reduction of a three-dimensional poroelastic theory. We apply the
model to polymer gel plates, for which a specific kinematic constraint and
constitutive relations hold. Finally, we assess the accuracy of the plate model
with respect to the parent three-dimensional model through two numerical
benchmarks, solved by means of the finite element method. Our results show that
the theory offers an efficient computational framework for the study of
swelling-induced morphing of composite gel plates.
