Dynamic Characterization-based Structural Optimization and Model Order Reduction for Axisymmetric Shell Resonators
Abstract
The present research is concerned with structural optimization of cylindrical and hemispherical resonators (CRs & HRs) employing computational tools. Additionally, it focuses on obtaining a reduced-order model (ROM) for HR, that accurately represents its dynamic behavior. The optimization process primarily focuses on achieving a prescribed frequency spacing around the Dominant flexural frequency (DFF) of a resonator and minimizing the computational frequency split present at DFF. Techniques such as widening the boundary value range of the input parameters via Single as well as Multi-Objective approaches have been exploited to achieve the research objectives. The results demonstrate that the frequency separation around the DFF can be increased, and the frequency split at the DFF can be reduced using the structural optimization methods available within the computational tool. Further, a ROM of HR derived computationally from the full-order model (FOM) is demonstrated to adequately capture the HR dynamics.