关于举行澳大利亚新南威尔士大学张义霞博士两个学术报告会的通知

发布时间： 2012-05-31

题目：常温及高温下的FRP混凝土梁的数值模拟

Numerical modeling of FRP reinforced concrete beams under ambient and elevated temperatures

时间：2012年6月6日下午2：30-3:30

题目：Mechanical and High velocity impact behavior of a new high performance fiber reinforced concrete

时间：2012年6月7日下午2：30-3:30

报告人：张义霞博士

地点：交通大楼604会议室

欢迎广大师生参加

土木与交通学院

二〇一二年五月三十一日

报告人简介：

张义霞博士，新南威尔士大学国防军事学院工程与信息学院的高级讲师。她曾在新南威尔士大学亚洲分校任助理教授，以及新南威尔士大学悉尼校区担任讲师。分别于1992年和1995年从天津大学取得工程力学专业本科及硕士学位。2011年在香港大学获得博士学位，导师为张佑启教授。之后先后在新南威尔士大学，昆士兰大学和韩国浦项科技大学博士后。2007年，她获得新南威尔士大学研究生教育证书。

Dr. Zhang is a Senior Lecturer in School of Engineering and Information Technology in the University of New South Wales at the Australian Defence Force Academy (UNSW@ADFA). Before she joined in UNSW@ADFA, she held the position as an Assistant Professor at UNSW Asia and lecturer in the main campus of University of New South Wales (UNSW). She worked as a postdoctoral research fellow in UNSW, the University of Queensland of Australia, Pohang University of Science and Technology in South Korea after completing her PhD in the University of Hong Kong in 2001 under the supervision of Prof. Y.K. Cheung. She obtained her Bachelor degree and Master degree in Engineering Mechanics from Tianjin University, China in 1992 and 1995. She was awarded the Postgraduate certificate for Higher Education by the University of New South Wales in 2007.

张博士的主要研究方向是复合材料和结构在土木工程，航空航天工程和机械工程等不同领域中的应用。她一直致力于发展有限元方法和工程结构的非线性有限元分析和模拟。近几年，她致力于FRP混凝土结构和纤维增强混凝土材料和结构的研究，特别是冲击荷载和火荷载等极端荷载作用下的结构行为的研究。同时，她也将研究方向扩展到新型的可持续建筑材料以及它们的应用。1998年至今，她发表了100多篇学术论文，包括4章节的书，高水平国际期刊和会议论文。2008年至今，她指导了7名助理研究员及访问学者，并且是5个博士生的主导师和1个博士生的副导师。2011年她获得澳大利亚国防部颁发的研究奖励基金（Spirtfire Memorial Defence Fellowship）

Dr. Zhang’s main research areas are composite materials and structures used in a variety of areas including civil, aerospace, and mechanical engineering. She has been working on the development of advanced finite element methods and nonlinear finite element analyses and modelling of engineering structures. In recent years, she has been conducting research on the FRP concrete structures and fiber reinforced concrete materials and structure, especially the structural behaviour under extreme loading such as impact loading and fire loadings. She has also developed interest in new sustainable construction materials and their applications. Since 1998, she has published over 100 peer-reviewed scholarly research papers including 4 book chapters and research papers published in leading International journals and conferences. So far, she has supervised 7 Research Associate/Visiting Research fellows since 2008 and is now supervising 5 PhD students as the main supervisor and 1 PhD students as the co-supervisor. She was awarded the Spirtfire Memorial Defence Fellowship in 2011.

她是国际计算力学学会，澳大利亚复合结构学会以及国际建筑FRP学会的成员。同时她还担任国际期刊《Recent Patents on Mechanical Engineering》的副主编。她还经常担任超过15个高水平国际期刊的审稿人。在一些国际会议中，她曾担任国际技术委员会成员或顾问董事会成员。并受到一些国际会议的邀请组织并主持技术研讨会。

She is a member of the International Association for Computational Mechanics, Australian Composite Structures Society and International Institute for FRP in Construction. She is the Associate Editor of an International journal entitled as Recent Patents in Mechanical Engineering and has been a frequent reviewers for over 15 leading International journals. She has also served as International Technical committee member or advisory board member in several international conferences. She has been invited to organize technical sessions by several international conferences and chaired many technical sessions.

报告会内容摘要：

题目：常温及高温下的FRP混凝土梁的数值模拟

Numerical modeling of FRP reinforced concrete beams under ambient and elevated temperatures

张义霞博士和她的博士生林筱姗共同发展了一种简单的一维二节点复合梁单元及一套非线性有限元模拟步骤来精确地模拟钢筋或FRP混凝土梁在常温及火载荷下的结构行为。新单元采用铁木辛柯复合梁函数来避免剪锁问题，并且建立了同时适用于细长梁及中厚梁的统一公式。采用基于热传导理论的非线性有限元分析确定温度沿梁截面的分布。非线性有限元分析同时考虑了几何非线性和温度影响下的材料非线性。所发展的单元不仅能够精确地模拟钢筋及FRP混凝土梁的结构行为，并且能节省大量的计算资源。她们同时采用新发展的单元对FRP混凝土梁在火载荷作用下行为的进行了参数研究，为结构分析和设计提供了有用的依据。

Dr. Zhang and her Phd student Ms. Xiaoshan Lin developed a simple one-dimensional two-node layered composite beam element and nonlinear FE modelling procedures for accurate modelling of structural behaviour of steel/FRP-reinforced concrete beams under a combined mechanical and thermal loading in fire conditions. Timoshenko’s composite beam functions are employed to construct the new element, and shear-locking problem is avoided naturally and a unified formulation for analyses of both slender and deep beams is established. A nonlinear finite element analysis based on heat transfer theory is performed to determine the temperature distribution across the cross-section of the beam. Both geometric and temperature-dependent material nonlinearities are accounted for in the nonlinear FEA. The element is computationally effective, and is demonstrated to be efficient and accurate for analyses of steel/FRP-reinforced concrete beams. The element is employed to investigate the influences of a series of parameters on the structural behavior of FRP-reinforced concrete beams in fire conditions, which could provide useful references for structural analysis and design.

Research Seminar: Mechanical and High velocity impact behavior of a new high performance fiber reinforced concrete

近几年，张博士致力于新型高性能纤维增强混凝土的冲击行为研究，并且获得了包括澳大利亚国防部科研基金在内的3个相关研究科研基金。她和她的研究员们设计出了一种新型混杂纤维（PVA纤维和钢纤维）加强的ECC材料，并且展开了一系列的包括冲击试验在内的材料试验。冲击试验荷载分别采用了实验室内的气枪射击和军用实弹射击。试验结果表明新型ECC材料的力学性能优异，冲击试验得到的局部破坏及细小裂缝表了其良好的抗冲击性能。同时，他们发展了计算机模拟技术，并成功地模拟了冲击行为。在这个研讨会中，张博士将介绍她的研究团队对这种新型高效纤维增强混凝土的力学行为和高速冲击行为的研究。

Dr. Zhang has been working on the Impact behaviour of a new high performance fiber reinforced concrete in recent years and was awarded three research grants on the related research including a defence related research grant and a defence fellowship. She and her associates designed the hybrid fiber ECC materials with PVA fibers and steel fibers and carried out a series of materials testing and impact tests using the gas gun facilities in lab and the real bullets fired from machines guns in military bases. The experimental studies demonstrated the superior mechanical behaviour of the new hybrid ECC material and excellent impact resistance with localized damaged areas and very fine cracks. They have also developed the computer simulation technique and successfully modelled the impact responses. In this seminar, Dr. Zhang will introduce the research on the mechanical and high velocity impact behaviour of the new high performance fiber reinforced concrete recently developed in his research team.