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Buckling of Rotationally Restrained Orthotropic Plates Under Uniaxial Compression

A solution methodology is developed to predict critical conditions for rotationally restrained orthotropic plates loaded by a uniform axial com pression. In addition, parametric studies are performed to find the effect, on the critical load, of various elastic constants for a practical range of aspect ratio values and the entire range of rotational restraint, including the extreme cases of simply supported and clamped plates. The generated data are based on the assumption of symmetric boundary conditions (the amount of rotational restraint is equal for opposite sides) although the methodology is not limited by this assumption. Among the conclusions one may list that the most significant effect is that of the ratio of Young's moduli and amount of rotational restraint.