時間：2018年12月18日上午9：00-11：00
Time: 9:00-11:00 am,December 18th, 2018
地點：航空樓A817
Place: Room 817,Aeronautics Building (A)
報告題目：SHPB脆性材料測試中的偽應變率效應研究
Title：Structural effects on the measurement of dynamic strength of brittle materials using SHPB
報告人：李慶明，英國曼徹斯特大學教授
Speaker: Professor Qingming Li,The University of Manchester
邀請人：郭偉國教授
Inviter: Professor Weiguo Guo
摘要：報告將介紹近十年來關于結構對脆性材料動態強度影響的系統研究。目前使用的基于SHPB的動態測量方法嚴重高估了脆性材料的動強度，在數值模型中錯誤地使用了許多基于SHPB測量的經驗公式。報告還將討論獲得脆性材料動態強度的有效應變率效應的可能途徑，以及對脆性材料動態強度產生真正應變率效應的機理。
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.
簡介：李慶明教授，1982年北京大學本科畢業，1986年北京大學研究生畢業獲碩士學位，1997年于University of Liverpool獲得哲學博士及機械工程博士(DEng)，英國機械工程師協會會士(Fellow of Institute of Mechanical Engineers)及注冊工程師(CE)。現為英國曼徹斯特大學應用力學教授及沖擊爆炸實驗室主任。他的研究領域包括結構耐撞性、侵徹力學、固體材料的動態行為、結構保護、多孔固體力學、沖擊環境和安全。他目前是國際防護結構協會(IAPS)和國際沖擊工程學會(ISIE)的理事會成員。自2008年以來，他一直擔任“國際沖擊工程雜志”的副主編，并擔任其他幾家雜志的編委會成員。
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.
