For the development of the practical methods of the structural analysis of typical reinforced plate structures, idealized approaches with the shear compatibilities of the matching beam and plate elements are needed. Orthotropic plate theory or the grillage beam theory based modeling techniques can be employed. These are two limiting physical idealizations. Orthotropic plate theory lumps the stiffeners with the plating to form an equivalent homogeneous plate of uniform thickness, but with different rigidity properties in the orthogonal directions corresponding to stiffeners directions. Two-dimensional grillage modeling lumps the plating with the stiffeners in forming a planar grid work of orthogonally interconnecting beams. Two types of different approaches mentioned above are studied in the points of its applicability and efficiency for the inclusion of the shear compatibility. Structural idealization is performed to make overall structural analysis firsthand, and the structural behaviors of the model in the airplane landing simulation are evaluated. Throughout this study, it is found that the structural idealizations with proper assumptions using the orthotropic plate and the grillage modeling are proved to be adequate and the numerical analysis results for stiffened plated grillage structures give acceptable deformations in the simulations.

shear compatibility, reinforced plate, grillage analysis, orthotropic plate.