Comparison of Vibration Response from Various Annulated Circular Plates attached with Holes and Concentrated Stiffened Patches under Thermal Environment

This study investigated the comparative vibration characteristics of annulated circular plates, annulated circular concentrated stiffened plates, and annulated circular hole plates through finite element analysis (FEA), while maintaining a constant mass for the plates. The temperature is held constant across all scenarios. The analysis of these plates is conducted under both free-free and clamped-free boundary conditions. Parametric studies are performed to assess the impact of Eigen frequencies, aspect ratio, and radius ratio on various stiffened plates, with the results being thoroughly examined and outlined.