Plenary Lecture

Interaction dynamics of a maglev vehicle moving on guideways considering support settlement

Professor J. D. Yau
Department of Transportation Management
Department of Architecture
Tamkang University
TAIWAN
E-mail: jdyau@mail.tku.edu.tw

Abstract: As a maglev transport route is planned to cross a region with soft soil, the interaction dynamics of vehicle/guideway is of great concern in riding quality and running safety of the maglev system. This study presents a computational framework to investigate the dynamic response of a maglev vehicle moving on guideway girders considering support settlement. Due to motion-dependent nature of magnetic forces in a maglev suspension system, an on-board hybrid PI controller in conjunction with Ziegler-Nicholas (Z-N) method is designed to regulate the magnetic force and control the vibration of the running maglev vehicle. To include the influence of support movements on vehicle/guideay dynamic analysis, the total response of the guideway girders is decomposed into the static response due to support settlement and the dynamic component caused by inertial effect of beam vibration. In this study, an analytical solution of the static displacement of the beam is presented and the dynamic analysis of the maglev vehicle/guideway coupling system is performed using iterative approach. Numerical studies indicate that decreasing levitation gap of a maglev vehicle may mitigate vehicle’s response; but once guideway support settlement is taken into account, the response of the maglev vehicle with smaller air gaps would be amplified significantly at higher speeds.

Brief Biography of the Speaker: Dr. J. D. Yau got his Ph.D. from National Taiwan University (NTU) in 1996. After serving as a chair-engineer at the Kuan-Tech Engineering Consultants Co. at Taichung in Taiwan (1997-1999), he joined the faculty at TamKang University (1999) where he has served as Assistant Professor (1999-2003), Associate Professor (2003-09), and Chair (2004-2007) in the Department of Architecture and Building Technology. In 2010, Dr. Yau became a Professor of Tamkang University, and an Adjunct Professor of Zhejiang University (2011-2013) and a Visiting Professor of East China Jiao Tong University (2011-2014) in China. Dr. Yau also serves as consultants on seismic analysis of storage tanks to Industrial Technology Research Institute (ITRI, government, 2011) and Shin-Yue Engineering Consultants Co. (private organization, 2010~) in Taiwan. Dr. Yau has published over 60 referred journal papers and articles. His research area of interest is centered on:
1. Maglev dynamics of vehicle/guideway interaction
2. Vibration problems of high speed rails
3. Geometrical nonlinear analysis of framed structures
4. Direct integration methods for structural dynamics
5. Structural stability of thin plates