11210E500100 College of Engineering Seminar

TOPIC
▸　Analytical and Hybrid Approaches for Analyzing and Controlling the Dynamics of Piecewise-Linear Systems

Abstract
❝　Predicting and harnessing the nonlinear dynamics of complex structures are of crucial importance for a wide range of engineered systems. These systems include complex mechanical and aerospace systems, where intermittent contact and friction significantly impact their performance, as seen in the case of damaged structures, turbomachinery, and vibration mitigation systems. Accurate prediction of these systems’ dynamics requires the appropriate modeling of piecewise-linear (PWL) nonlinearities induced by contact and friction behaviors. This challenge hinders the development of new technologies, as efficient linear analysis techniques are not applicable to these nonlinear systems. In this presentation, I will introduce a novel suite of effective techniques developed by our research group, created to facilitate efficient modeling and control of PWL systems’ dynamics. These methods can efficiently capture transient dynamics, nonlinear normal modes, and amplitude-dependent resonance of PWL systems. Furthermore, I will discuss the applications of these methods in mechanical and aerospace systems.　❞

SPEAKER
▸　Dr. Meng-Hsuan TIEN *
▸　Department of Power Mechanical Engineering, National Tsing Hua University

Short Bio
❝　Meng-Hsuan (Mark) Tien joined the Department of Power Mechanical Engineering at National Tsing Hua University as an Assistant Professor in August 2020, following the completion of his Ph.D. in Mechanical Engineering from The Ohio State University in May 2020. His research primarily centers on nonlinear dynamics, with a specific focus on computational modeling and experimental investigation of structural systems. His work has resulted in the development of effective tools for the analysis, identification, and control of structural systems across diverse domains, including turbomachinery, energy systems, transmission systems, and automation machines. Meng-Hsuan's recent accomplishments include receiving the 2023 New Faculty Research Award at National Tsing Hua University and being recognized as the Ohio State University's Presidential Fellow for the 2019-2020 academic year.　❞

TIME
▸　2023/10/31 (TUE) 13:20 ~ 15:10

VENUE
▸　Classroom 202, Chemical Engineering Building