NEW DATE 9/30/22: Online Seminar - Dr. Thomas Breunung
Nonlinear dynamical systems in complex environments
Nonlinear dynamical systems in complex environments
Dr.
Thomas Breunung
Postdoctoral Researcher
Dynamics & Controls Lab, Department of Mechanical Engineering
University of Maryland, College Park
Nonlinearities, uncertainties, and complex time variations
are often encountered in engineering applications. These features challenge
common analysis tools based on low-dimensional, deterministic and steady
systems. In this talk, I present recently developed methods to overcome these challenges
and present i) a nonlinear model order reduction technique, ii) a tool to compute
complex response patterns and iii) a data driven approach for an environment
with high uncertainties.
First, I will discuss a model order reduction technique to reduce the dimensionality for nonlinear mechanical systems. This technique offers a natural extension of linear modal analysis to nonlinear mechanical system. Then, I will proceed by analyzing the response of nonlinear mechanical systems to complex environments modelled by quasi-periodic functions. Finally, I will conclude by presenting a data-driven approach to model and forecast ocean waves. Therein, a fruitful combination of a physical model with a data-driven approach yields accurate predictions in an environment with high uncertainties and few available measurements.
Dr. Thomas Breunung obtained his Ph.D. from ETH Zurich, Switzerland in 2020. His Ph.D. thesis was supervised by George Haller and focused on developing novel analytical and computational tools for vibration analysis of high dimensional nonlinear mechanical systems. In 2021, Dr. Breunung joined the University of Maryland, College Park as a postdoctoral researcher working with Balakumar Balachandran. In Maryland, he continues his research on nonlinear mechanical systems, whereby he focuses on the effects of noise. Moreover, he develops data-driven techniques to predict extreme waves. Dr. Breunung’s work has been frequently presented at international conferences and published in leading journals.