报告题目：Methods and applications of uncertainty and reliability analysis for performance assessment of concrete structures
报告地点：芝纶馆308会议室
报告时间：9月27日（周五）下午14:00
主办单位：力学与材料学院
欢迎广大师生参加！
报告摘要:
The aim: The seminar is focused on methodology, advanced software and application for statistical and reliability analysis of civil engineering structures, mainly concrete bridges. Fundamental theory and methods implemented in user-friendly reliability and finite element software will be presented first. The main part of seminar will be devoted to illustrative examples of applications.
Reliability: Methods for efficient statistical, sensitivity and reliability assessment will be presented. The attention is given to the techniques which are developed for an analysis of computationally intensive problems which is typical for a nonlinear FEM analysis. The lecture will present the possibility of "randomization" of computationally intensive problems in the sense of the Monte Carlo type simulation Latin hypercube sampling. Statistical correlation is imposed by the stochastic optimization technique – the simulated annealing. The multipurpose software FReET (http://www.freet.cz) will be presented.
Nonlinear analysis: A probabilistic approach to nonlinear fracture mechanics analysis of concrete structures is developed. Nonlinear finite element software ATENA (http://www.cervenka.cz) is based on advanced material models with damage concept, smeared crack approach and crack band theory with fracture energy-related softening. Programs ATENA and FReET are integrated into SARA shell in order to randomize the nonlinear fracture analysis of engineering structures. Efficient techniques of both nonlinear numerical analysis of concrete structures and stochastic simulation methods are combined in order to offer an advanced tool for assessment of realistic behavior of concrete structures and to enable virtual reliability testing.
Applications: Several examples of practical applications will be presented, especially for bridges in Austria and Italy.
Software demonstration: FReET, ATENA, SARA (depends on interest of participants)
报告人简介:
Professor Drahomir Novak holds the Chair of Structural Mechanics at Brno University Technology, Czech Republic. He is a member of Czech Society of Mechanics, a member of Czech Standardization Committee on loading and reliability, a member of International Association FraMCoS – Fracture Mechanics of Concrete Structures and IABMAS. During his professional career Prof Novak has held various visiting positions in institutions around the world, including Kyoto University, Japan (1989, 1991-93); University of Innsbruck, Austria (1990, 1994); BOKU University, Austria (visiting prof. from 2006); Kasetsart University, Thailand (1996, 1998, 2002, 2008); IMMS, Ltd., Thailand (2008) and Northwestern University, USA (1997, 1999, 2000, 2001, 2003).