時(shí)間：2018年12月18日上午9：00-11：00
Time: 9:00-11:00 am,December 18th, 2018
地點(diǎn)：航空樓A817
Place: Room 817,Aeronautics Building (A)
報(bào)告題目：SHPB脆性材料測(cè)試中的偽應(yīng)變率效應(yīng)研究
Title：Structural effects on the measurement of dynamic strength of brittle materials using SHPB
報(bào)告人：李慶明，英國(guó)曼徹斯特大學(xué)教授
Speaker: Professor Qingming Li,The University of Manchester
邀請(qǐng)人：郭偉國(guó)教授
Inviter: Professor Weiguo Guo
摘要：報(bào)告將介紹近十年來(lái)關(guān)于結(jié)構(gòu)對(duì)脆性材料動(dòng)態(tài)強(qiáng)度影響的系統(tǒng)研究。目前使用的基于SHPB的動(dòng)態(tài)測(cè)量方法嚴(yán)重高估了脆性材料的動(dòng)強(qiáng)度，在數(shù)值模型中錯(cuò)誤地使用了許多基于SHPB測(cè)量的經(jīng)驗(yàn)公式。報(bào)告還將討論獲得脆性材料動(dòng)態(tài)強(qiáng)度的有效應(yīng)變率效應(yīng)的可能途徑，以及對(duì)脆性材料動(dòng)態(tài)強(qiáng)度產(chǎn)生真正應(yīng)變率效應(yīng)的機(jī)理。
Abstract:This presentation introduces a systematic research over past decade about the structural effects on the dynamic strength of brittle materials. The currently-used dynamic measurement method based on SHPB seriously over-calculate the dynamic strength of brittle materials, and many empirical equations based on SHPB measurements are used wrongly in the numerical models. Possible ways to obtain valid strain-rate effect on the dynamic strength of brittle materials and the mechanisms that produce genuine strain-rate effects on the dynamic strength of brittle materials will also be discussed.
簡(jiǎn)介：李慶明教授，1982年北京大學(xué)本科畢業(yè)，1986年北京大學(xué)研究生畢業(yè)獲碩士學(xué)位，1997年于University of Liverpool獲得哲學(xué)博士及機(jī)械工程博士(DEng)，英國(guó)機(jī)械工程師協(xié)會(huì)會(huì)士(Fellow of Institute of Mechanical Engineers)及注冊(cè)工程師(CE)。現(xiàn)為英國(guó)曼徹斯特大學(xué)應(yīng)用力學(xué)教授及沖擊爆炸實(shí)驗(yàn)室主任。他的研究領(lǐng)域包括結(jié)構(gòu)耐撞性、侵徹力學(xué)、固體材料的動(dòng)態(tài)行為、結(jié)構(gòu)保護(hù)、多孔固體力學(xué)、沖擊環(huán)境和安全。他目前是國(guó)際防護(hù)結(jié)構(gòu)協(xié)會(huì)(IAPS)和國(guó)際沖擊工程學(xué)會(huì)(ISIE)的理事會(huì)成員。自2008年以來(lái)，他一直擔(dān)任“國(guó)際沖擊工程雜志”的副主編，并擔(dān)任其他幾家雜志的編委會(huì)成員。
Introduction: Prof. Qingming Li is currently a professor in applied mechanics at The University of Manchester, and leads the impact and explosion laboratory. He graduated from Peking University with BSc and MSc and from University of Liverpool with Ph.D and a higher doctorate (Doctor of Engineer, DEng). His research field covers structural crashworthiness, penetration mechanics, dynamic behavior of solid materials, structural protection, mechanics of cellular solids, shock environment and safety. He is currently the board members of International Association of Protective Structures (IAPS) and International Society of Impact Engineering (ISIE). He is a charted engineer (CE) and a fellow of Institute of Mechanical Engineer (FIMechE). He has been the associate editor of International Journal of Impact Engineering since 2008 and editorial board members of several other journals.
