Effect of Cutout Eccentricity on the Elastic Stability of Square Perforated Plates
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Abstract
This research investigates an elastic stability, in a form of buckling load, of a square plate with an eccentric square cutout by considering the effects of eccentricity and size of a cutout and loadings. Three size of square cutouts, three eccentric positions along x- and y-axes, and three type of loadings are considered. For boundary conditions, a simple support on all edges of the plates is prescribed. The problems are modeled and simulated by finite element program, Ansys. In most cases, the results show that larger holes decrease the stability of the plates, while loading the plate in compression along both axes causes the plate to be the most vulnerable. However, loading the plate in one axis and pulling it in the other results in the best stability or buckling capacity. It also shows that the eccentricity of the cutout in relation to the load affects the stability of the plate. In the case of uniaxial and biaxial compressive loads, the eccentric hole along the main compressive load increases plate stability. In contrast, the stability of the plates are decreased in the case of biaxial tension-compression load no matter direction of eccentricity along the loads. For the buckling mode, as expected, a higher mode, a higher buckling capacity can be achieved.
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