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学术报告:磁流变材料及其在创新工程中的应用

报告题目:Magnetorheological Materials and Their Innovative Engineering Applications(磁流变材料及其在创新工程中的应用)

报 告 人:  Prof.  Weihua Li(卧龙岗大学教授)

时    间: 412日(星期三)上午10:00-11:00

地    点: 大学城校园工学二号馆六楼603会议室

Abstract

Magnetorheological (MR) materials, including MR fluids and MR elastomers, are smart materials that their damping and stiffness can be controlled by an external magnetic field. These materials have attracted considerable interests in recent years because of its potential as a simple, quiet, and rapid-response interface between electronic controls and mechanical systems. This talk will present two current research projects on the application of MR technologies in two research fields: high speed trains and structural protection. The first topic aims to address the instability and ride comfort of current high speed trains when their running speeds are above 300 km/h. Both simulation and preliminary experimental work have demonstrated that MR dampers can improve train’s critical speed and ride comfort. The second topic aims to develop semi-active MR elastomer isolators for structural control. We prototyped innovative multi-layer isolators and evaluated their performance under different external excitations. The long-term objective is to promote MR isolators for real structural control.

    磁流变材料,包括磁流变流体(MRF)及磁流变弹性体(MRE),是阻尼、刚度可被外界磁场控制的智能材料。这些属性使得MRE或MRF成为发展减震装置的理想智能材料,特别是高速列车结构振动控制等方面。这次讲座将着重关注磁流变技术在两个典型领域的应用:高速列车与结构保护。高速列车在大于300 km/h的速度下会自激振动而引发许多问题:运行不稳定性、搭乘舒适感差等等,仿真和实验结果表明,磁流变技术能够提升列车的临界速度和搭乘舒适度。在结构保护方面,本次报告介绍了一种半主动控制的MR弹性隔震器,通过创新结构制作多层隔震器原理样机并评估其在不同外部激发条件下的性能,最终目标是实现MR隔震器的实时结构控制能力。

 

Brief Biography

Weihua Li, PhD, is a Senior Professor and Director of the Advanced Manufacturing Research Strength at the University of Wollongong. He completed his BEng (1992), MEng (1995) at University of Science and Technology of China, and PhD (2001) at Nanyang Technological University (NTU). He was with the School of Mechanical and Aerospace Engineering of NTU as a Research Associate/Fellow from 2000 to 2003, before he joined the School of Mechanical, Materials and Mechatronic Engineering as a Lecturer. His research focuses on smart materials and their applications, microfluidics, rheology, and intelligent mechatronics. He is serving as editor or editorial board member for several international journals, including IEEE/ASME Transactions on Mechatronics, Smart Materials and Structures, Scientific Reports, RSC Advances, etc. He has published more than 300 journal and conference papers with more than 5200 citations. He is a recipient of Fellow of the Engineers Australia, the Fellow of Institute of Physics (UK), Australian Endeavour Research Fellowship, JSPS Invitation Fellowship, Vice-chancellor's Award for Interdisciplinary Research Excellence, and numerous Best Paper Awards. 

    李卫华博士,澳大利亚卧龙岗大学教授、先进制造研究中心主任。分别于1992年与1995年在中国科技大学获得学士及硕士学位,并于2001年获得新加坡南洋理工大学博士学位。自2003年起,在澳大利亚卧龙岗大学机械、材料及机电工程学院从事科研教学工作。他的研究主要集中于智能材料及其应用、微流体、流变学以及智能机电一体化。是IEEE/ASME Transactions on Mechatronics, Smart Materials and Structures, Scientific Reports等多个国际著名学术期刊的副主编或编辑委员。现已发表的期刊及会议论文超过300多篇并被引用超过5200多次。曾被授予是澳大利亚工程师协会Fellow,英国物理学会Fellow,曾被授予澳大利亚奋进奖学金,日本学术振兴会奖学金,并数次获得学术期刊及学术会议的最佳论文奖。

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