【百家大講堂】第216期：先進的吸能防爆材料

　　講座題目：先進的吸能防爆材料 

　　報  告 人：Dora Dimanova Karagiozova

　　時  　 間：2019年6月28日上午10:00-12:00

　　地　   點：中關(guān)村校區(qū)3號教學(xué)樓301教室

　　主辦單位：研究生院、機電學(xué)院

　　報名方式：登錄北京理工大學(xué)微信企業(yè)號---第二課堂---課程報名中選擇“【百家大講堂】第216期：先進的吸能防爆材料 ”

 

【主講人簡介】

 Dora Dimanova Karagiozova教授現(xiàn)任職于保加利亞科學(xué)院力學(xué)所，是沖擊動力學(xué)領(lǐng)域的知名專家。任International Journal of Impact Engineering，Latin American Journal of Solids and Structures和Journal of Theoretical and Applied Mechanics期刊編輯委員會委員，并任ERC CoG panel “Products and Processes Engineering”委員會委員。 Dora Karagiozova is a Professor of Solid Mechanics at the Institute of Mechanics, Bulgarian Academy of Sciences. She has received her PhD in Solid Mechanics from the Institute of Applied Mathematics and Mechanics, Ukrainian Academy of Sciences.

 

Currently Prof. D. Karagiozova is a member of the editorial boards of International Journal of Impact Engineering, International Journal of Mechanical Sciences, Latin American Journal of Solids and Structures and Journal of Theoretical and Applied Mechanics- Bulgaria. Dora Karagiozova is also a member of the European Research Council Executive Agency, Panel “Products and Processes Engineering” and serves as a reviewer for many international journals.

 

【講座信息】

報告主要介紹特殊的核芯材料在準靜態(tài)和高速動態(tài)加載時的某些現(xiàn)象、宏觀尺度下的變形機制以及數(shù)值模擬。評價微觀和中細觀機理對工程設(shè)計中重要組分多孔材料的動態(tài)壓縮行為的作用。同時，將介紹三明治結(jié)構(gòu)的一些應(yīng)用實例，并與實體材料的響應(yīng)進行對比。

 

 

The design of efficient yet lightweight constructions capable of withstanding intensive dynamic loading and the development of an efficient protection from hazardous events, as blast and impact, continue to present engineering challenges. 

 

The sandwich-like structures with soft core materials represent a class of efficient engineering solutions due to the capability of these structures to absorb a significant amount of energy and thus to mitigate blast and impact. Their response, however, is strongly influenced by the characteristics of the core materials. From this viewpoint, the mechanical properties’ characterization and the mechanisms of the load transfer trough the core become essential. Significant research efforts have been made to bring a better understanding of the behavior of soft materials and a big progress has been made in the experimental, analytical and numerical methods of analysis. 

 

The present talk is focused on some aspects of the phenomena, deformation mechanisms at macro scale and on the modelling of particular types of core materials when applying quasi-static and high velocity dynamic loading. Comments will be made on the role of the micro- and meso-scale mechanisms in the dynamic compression of cellular materials being an important part of the engineering design. Some examples of the application of sandwich-like structures will be presented when comparing the response of these structures with the response of their monolithic counterparts. 

 

Fiber-Metal-Laminates (FML) comprising metal sheets and composite plies is another type of smart materials used in the transportation systems which could be subjected to hazardous loading. The response of FML panels to a highly localized blast loading will be briefly discussed to reveal the role of the force transfer in the damage of these structures.