关于举办加拿大西安大略大学Ashraf El Damatty教授讲座的通知
发布时间: 2019-12-27

  目:Application of Revolutionary Optimization in Structural Engineering(进化型优化在结构工程中的应用)

  间:20201810:0011:00

  点:华南理工大学7号楼二楼大会议室

报告人:Ashraf El Damatty教授(加拿大西安大略大学)

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                            土木与交通学院

                            20191227

报告人简介:

Ashraf El Damatty,加拿大西安大略大学土木与环境工程系教授兼系主任。他是加拿大土木工程学会院士和加拿大工程学院院士。他是WindEEE研究所的研究主任,《风与结构》杂志的联合主编。他拥有同济大学和四川大学的高端专家称号。他分别于1986年和1991年在开罗大学获得理学学士学位和理学硕士学位,1995年在加拿大麦克马斯特大学获得结构工程博士学位,2016年在英国伦敦大学学院获得高等教育管理工商管理硕士学位。他是加拿大土木工程学会(CSCE)钢结构委员会的创始人,目前担任CSCE结构部主席。他曾在北美和中东的许多项目中担任顾问,撰写了约250篇论文,获得了超过2000万美元的研究资金。他曾指导30多名博士生和20多名理学硕士生,并被邀请在全球许多国家担任主旨演讲人。他获得了多项奖项,包括美国ASTM协会颁发的艾伦·约克代尔奖、加拿大结构有效设计会议最佳论文奖、2014年卡西米尔·戈夫斯基奖章竞赛荣誉奖、2015CSCE惠特曼·赖特奖、2016CSCE霍斯特·莱弗兹奖章和西安大略大学学院学者奖。他最近获得了2018年安大略省工程专业工程师发展研究奖章。他的研究工作影响了国际规范和世界范围内的工程实践。

 

报告摘要:

  The revolutionary optimization methods, like the Genetic Algorithm, are very power tools that can be used to estimate the global maximum and minimum of engineering problems. They are particularly important in problems involving many local maxima and minima in order to separate them from the global peak values. Dr. El Damatty and his research team have developed over the years very powerful numerical tools combining revolutionary optimization algorithms with finite element modeling (FEM) and design criteria in order to solve various structural engineering problems. In this presentation, a brief introduction about various optimization methods and their limitations will be discussed. This is followed by presenting six different applications considered to obtain optimum solutions. The first application considers liquid-filled steel conical tanks. The optimization/FEM is used to obtain the dimensions and layout of unstiffened and stiffened conical tanks that minimize the weight of the tanks while preventing any form of instability of the steel structures. In the second application, an innovative approach is developed for determining the critical imperfection pattern of thin-walled shell structures associated with welding depression. The third application involves determining the optimum curved shape and dimensions of cooling towers commonly used in power plants. The fourth application considers plate girder composite cable-stayed bridges where multi-variable optimization technique is used to estimate the local dimensions of the cross-section, the geometric layout of the bridges and the cables prestressing forces that minimize the cost of the bridges while considering dead loads, live loads and wind aerodynamic loads. The fifth application focuses on transmission line structures where the optimization is used to determine the critical downburst locations leading to maximum wind forces during thunderstorm events. The sixth application considers post-tensioned concrete slabs where a multi-objective optimization technique is used to determine the optimum tendons profile vertically and horizontally as well the dimensions of the slabs. The challenges faced in obtaining the global peak values in the sixth considered applications will be discussed together with the techniques used to overcome those challenges.