Civil Engineering Departmental Seminar - Stochastic mechanics, global reliability and optimization of complex structures via physically driven probability density evolution method
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Stochastic mechanics, global reliability and optimization of complex structures via physically driven probability density evolution method
Full uncertainty quantification and propagation are the basis for the reliability evaluation of complex systems, while the damage and failure from materials to structures should also be incorporated. This leads to the major difficulty lying in the coupling of randomness and nonlinearity for real-world structures and systems, which are generally high-dimensional systems. Incorporating the underlying physics of the system and the principle of preservation of probability will lead to a physically driven full probabilistic uncertainty propagation method. Some new advances will be outlined, including: (1) The generalized density evolution equation and the dimension-reduced probability density evolution equation for high-dimensional nonlinear systems based on the principle of preservation of probability; (2) The effects of randomness of structural parameters observed from experimental studies; and (3) Global reliability and design optimization of structures in the context of uncertainty. Challenging problems to be studied further will also be discussed.
Jianbing Chen is currently University Distinguished Professor of Tongji University in the College of Civil Engineering. He is the Academic Committee member of Tongji University and vice director of the State Key Laboratory of Disaster Reduction in Civil Engineering. Dr. Chen specializes in the area of uncertainty quantification, stochastic mechanics and reliability, and published 4 books and over 210 journal papers. He received the Natural Science Award of China (2016), the IASSAR Early Achievement Award (2017), the National Science Fund for Distinguished Young Scholars (2017) and the Humboldt Research Award (2023). Prof. Chen now serves as the Chair of the Executive Board of the International Association for Structural Safety and Reliability (IASSAR), member of Board of Directors of the International Civil Engineering Risk and Reliability (CERRA), the Board member of the International Joint Committee on Structural Safety (JCSS) and reporter of WP1, and the vice President of Chinese Society for Vibration Eng