报告题目：Global dynamics and Dynamical Integrity Assessment

 报告人： Prof. Giuseppe Habib（Budapest University of Technology and Economics）

 报告时间：2024年7月17日（周三）10:00-12:00

 报告地点：18号楼705会议室

 主办单位：威廉体育官方app下载 国际合作处

 报告内容：

 One of the challenges of nonlinear dynamical systems is that it can be difficult to exclude the possibility of overlooked behaviors. This is because properties such as the stability of a steady-state solution are only local, meaning they only hold true in a small region around the solution in the phase space. From an engineering perspective, this poses a significant challenge, since stability analysis is not sufficient for assessing the robustness of a system against external perturbations. This property of known as dynamical integrity, and it is necessary to assess it for safe operation. While methods for investigating the dynamical integrity of a steady-state solution exist, they often suffer from computational inefficiency, memory issues, or complexity.During this seminar, first, examples of dynamical states, which are only locally stable, are provided. Then, an overlook of existing methods for dynamical integrity analysis is presented. Finally, a new numerical methodology for dynamical integrity assessment is discussed, and its effectiveness is evaluated through several examples.In the second part of the seminar, a new method for predicting regions of the parameter space that may have problems with global stability will also be presented.

 报告人简介： 

 Giuseppe Habib received his Ph.D. in Mechanical Engineering from the Sapienza University of Rome (Italy) and the Budapest University of Technology and Economics (Hungary) in 2013 as part of a collaboration between the two institutes. After completing his Ph.D., he spent three years as a postdoctoral researcher at the University of Liege (Belgium). He later returned to Budapest as part of a Marie Skłodowska-Curie Individual Fellowship. He is now an associate professor at the Dept. of Applied Mechanics at the Budapest University of Technology and Economics, and head of the Global Dynamics research group, where he has remained since 2016.His research interests include nonlinear dynamics, with a focus on global dynamics, dynamical integrity, vibration mitigation, and nonlinear dynamic vibration absorbers.