Study of the stress-strain state of a perforated plate with stiffening ribs

This study investigates the mechanical behaviour of solid and perforated plates with stiffening ribs through a systematic three-stage approach integrating simulation and experimental methods. Initial investigations focused on the formation of stiffeners, revealing that rupture ceased at a hole diameter of 10 mm, with maximum equivalent stresses reaching 275 MPa. Using ANSYS Workbench, we analysed the stress-strain state and stability characteristics, finding a critical load of 43 N for stability loss in the perforated plates. Experimental results indicated that a perforated plate deflected 10.35 mm under a load of 38.5 N, whereas a solid plate exhibited the same deflection under only 11.5 N, indicating a 70 % difference in load capacity. Additionally, the weight of the solid plate was measured at 92.8 grams, compared to 76.6 grams for the perforated plate, achieving a weight reduction of over 17 %. These findings highlight the superior structural performance and material efficiency of perforated plates with stiffening ribs. The study underscores the potential for optimizing engineering designs to enhance functionality and reduce material usage.

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Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki i promocja sportu (2025).