学术信息

安中讲坛第八十七期:中国工程院外籍院士Billie F. Spencer Jr.学术报告

发布者:李嘉宁发布时间:2024-10-10浏览次数:422

报告题目Topology Optimization of Structures Subjected to Random Dynamic Loads

时间:2024年10月20日(周日)下午14:00

地点:建筑工程学院安中大楼多功能厅

报告人:Billie F. Spencer Jr.,中国工程院外籍院士

内容摘要:This seminar provides an overview of recent efforts on topology optimization of structures subjected to stochastic dynamic loads.  Nearly all approaches to date only consider static deterministic loads. However, many of the most severe dynamic loads that civil structures must withstand are random and dynamic in nature. A general topology optimization framework is presented to accommodate directly the random dynamic nature of the excitation and the responses. The proposed framework is illustrated for seismically excited and wind excited buildings, as well as bridges subjected to random traffic loading. Subsequently, an efficient and compact 115-line educational code for structural topology optimization considering stationary stochastic dynamic loads is discussed.  This code is intended to serve as a baseline to help researchers understand the theory and implementation of this topology optimization approach and as a foundation for additional applications and developments. This research is expected to ultimately lead to more effective performance of our civil infrastructure.

 

主讲人简介: 


B.F. Spencer, Jr. received his Ph.D. in theoretical and applied mechanics from the University of Illinois at Urbana-Champaign in 1985. He worked on the faculty at the University of Notre Dame for 17 years before returning to the University of Illinois at Urbana-Champaign, where he currently holds the Nathan M. and Anne M. Newmark Endowed Chair in Civil Engineering and is the former Director of the Newmark Structural Engineering Laboratory. His research has been primarily in the areas of structural health monitoring, structural control, stochastic fatigue, stochastic computational mechanics, and machine learning, and computer vision. Dr.  Spencer has directed more than $70M in funded research and published more than 700 technical papers/reports, including two books. He was the first to study and design magnetorheological (MR) fluid dampers for protection of structures against earthquakes and strong winds, overcoming the inherent limitations of existing passive energy dissipation systems, as well as power-dependent active control systems, which are in common use today. His research on structural health monitoring systems and smart wireless sensors integrates advanced computing tools with smart sensors, to provide a functional platform with self-interrogation capabilities. Dr. Spencer has received numerous awards, including the ASCE Outstanding Instructor Award, the ASCE Norman Medal, the ASCE Housner Structural Control and Monitoring Medal, the ASCE Newmark Medal, the Zhu Kezhen International Lectureship Award, the ANCRiSST Outstanding Senior Investigator Award, the Structural Health Monitoring Person of the Year Award, the J.M. Ko Medal of Advances in Structural Engineering, IASCM Takuji Kobori Prize, and the Raymond & Sidney Epstein Structural Engineering Faculty Award.  Dr. Spencer is a Distinguished Member of ASCE, a Foreign Member of the Polish Academy of Sciences, a Foreign Member of the Engineering Academy of Japan, a Foreign Member of the Chinese Academy of Engineering, the North American Editor in Chief of Smart Structures and Systems, the Executive Managing Editor of the journal of Earthquake Engineering and Engineering Vibration, and the past president of the Asia-Pacific Network of Centers for Research in Smart Structures Technology. Moreover, he was recently appointed as a Fellow of the School of Engineering, the University of Tokyo.


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