应航天航空学院邀请，Fleury教授为我校师生作报告。
    报告时间：2008年4月24日（星期四）下午2：30 －3：30
    报告地点：教一楼南208（强度与振动教育部重点实验室会议室）
    报告题目：topological optimization

    报告摘要：This presentation is devoted to topological optimization, which consists in finding the optimal material distribution into a predetermined space subject to some boundary limits. The general principle is then to mesh the design space into small finite elements and to determine which ones belong to the solution. The design variables correspond to the densities of each finite element. Ideally they should be 0/1 variables (absence or presence of an element), but the artificial SIMP law is usually preferred to link together stiffness and density (exponential law). Topological optimization tools make the design stage much easier and they help engineers to find imaginative and innovative design concepts in an automated way. Some academic examples are given to illustrate the concepts and to explain the use of various input parameters available to control the optimization process. The engine pylon application (Airbus A380) is presented.

    报告人简介：
    Professor Fleury currently holds the Chair of Multidisciplinary Optimisation in the University of Liege (Belgium). Formally an associate professor in the Mechanical, Aerospace, and Nuclear Engineering Department at UCLA, Dr. Fleury is an internationally recognised expert in the field of structural optimisation. He has written over 100 papers on the subject since 1973.
    Ongoing research has investigated structural optimisation from the point of view of member sizing, geometrical configuration or shape, buckling, and dynamic behaviour. Dr. Fleury has developed several original methods, which are now used in many universities, research centres and industrial companies throughout the world. In addition, he has considerable academic and consulting experience (in the US as well as in Europe) in the areas of finite element analysis, computer aided geometric design and computer graphics. Professor Fleury has worked under AFOSR and NASA sponsorship. The ASME recognised his "outstanding contribution" to shape optimal design using convex linearization with the 1984 ASME Structures and Materials award.
    Professor Fleury is on the Editorial Advisory Board of the international journals "Engineering Optimisation", "Structural Optimisation" and"Global Optimisation", and is the author of several chapters of Foundations of Structural Optimisation: A Unified Approach (1982), New Directions in Optimum Structural Design (1984), The Optimum Shape - Automated Structural Design (1986), Structural Optimisation - Status and Promise (1992) and Optimisation of Large Structural Systems (1993).
    Also, Professor Fleury has developed the well-known "CONLIN optimiser", which is included in several industrial finite element codes. Since 1990, the CONLIN program, as well other powerful optimisers, is commercialised by the SAMTECH Company, for which Professor Fleury serves as a regular consultant.