Modeling the Vibrations and Energy Flows in Complex Dynamic Systems
| Category | Publications |
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| Abstract | This international research cooperation is aimed to further and widen the scope of the ongoing research about developing a general methodology for the vibration and energy flow analyses of complex dynamic systems. The unique advantages of this modeling technique are explored and demonstrated though employing it to active control of structural vibrations. In the process, some important questions and concerns in active vibration control have been discussed which include how the modal truncation errors affect the number of control forces, how to select the appropriate number of error sensors, what are the optimal control locations, and so on. In addition, the control of power flows in dynamic systems is studied in terms of smart joints which apply both active forces and moments for improved performance and efficiency. A new control strategy based on the concept of vibration-free state is also proposed to reduce vibrations and confine disturbance sources. The significance and impact of this international research experience is not limited to the technical achievements. It also gives American researchers and students the opportunities of acquiring research skills, developing long term relationship with world-leading researchers, learning about different cultures, and understanding diversity issues. In view of the global economy and the increasing speed of globalization in other aspects, the international cooperation experience is critical to maintaining our world leader position from economy to international affairs. We firmly believe this IREE international cooperation program represents a time- and cost-efficient means of promoting intellectual, educational, social and cultural exchanges between American researchers, students and institutions with their international counterparts. |
| Contributor | Mourad Ouzzani
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| Bio | Wen Li received the B.S. degree in Physics in 1982 from the Liaoning Teachers University in Dalian, China, and M.Eng. in 1984 from Beijint Institute of Technologies in Beijing, China. He received his Ph.D. degree in Mechanical Engineering from University of Kentucky in 1991. He is currently Associate Professor in Mechanical Engineering at Wayne State University. He was Associate Professor at Mississippi State University from 2004-2007. Before that, he worked as: Principal Engineer at United Technologies Research Center (1/2002-8/2004); Senior Staff Engineer at Carrier Corporation (5/1995- 12/2001); Technical Specialist at Case Corporation (11/1992-4/1995). His research interests include dynamic systems, acoustics, noise and vibration control, and numerical methods. Hongan Xu received the BS and M.Eng. in Mechanical Engineering from Beijing Institute of Machinery Industry in 1998 and 2001. Mr. Hongan Xu came to the U.S. in August, 2005 to become a Ph.D. student in the Department of Mechanical Engineering at Mississippi State University. He received his Master degree in 2001 from the Department of Mechanical Engineering and Applied Electronics Technology at Beijing Institute of Machinery, Beijing, China. From 2001-2005, he was a research associate in the Department of Mechanical Engineering at Beijing University Technology, working on machining dynamics, cutting mechanics and mechanistic process modeling techniques. |
| Sponsored By | NSF CMMI-528263 |
| Cite this work | Researchers should cite this work as follows: Wenlong Li and Hongan Xu, "Modeling the Vibrations and Energy Flows in Complex Dynamic Systems", Trip report presented at the NSF IREE 2007 Grantees Conference, October 30 - November 1, 2007, Purdue University, West Lafayette, Indiana |
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