MAE 298 SEMINAR: Predicting and Constraining Aeroelastic Limit-Cycle Oscillations

Abstract: The pursuit of sustainable aviation is leading to the development of increasingly lightweight and flexible aerospace vehicles, which are highly susceptible to dynamic aeroelastic instabilities such as flutter. In the presence of nonlinear effects, these instabilities may lead to the onset of periodic responses known as limit-cycle oscillations (LCOs). LCOs raise significant concerns because they can cause fatigue, damage or failure, and they can even develop at linearly stable (pre-flutter) conditions. These issues call for accurate and computationally efficient methods to predict and prevent aeroelastic LCOs early in the design phase. This talk will discuss recent advancements in predicting aeroelastic LCOs and integrating these predictions into design optimization. These advancements have the potential to enhance the performance and safety of next-generation aerospace vehicles while streamlining their design process, thus bringing us closer to the goal of sustainable aviation. 

Bio: Riso is an assistant professor in the Daniel Guggenheim School of Aerospace Engineering at Georgia Tech. Her research group investigates the aeroelastic dynamics of next-generation fixed-wing and vertical lift aerospace vehicles, focusing on the prediction and fundamental understanding of flutter and limit-cycle oscillations. Before joining Georgia Tech, Riso was a research fellow in the Department of Aerospace Engineering at the University of Michigan. She earned her B.S., M.S. and Ph.D. degrees from Sapienza University of Rome. Riso is senior member of the AIAA serving on its Structural Dynamics Technical Committee and a member of the VFS serving on its Dynamics Technical Committee