【百家大讲堂】第216期：先进的吸能防爆材料

【百家大讲堂】第216期：先进的吸能防爆材料

　　讲座题目：先进的吸能防爆材料 

　　报  告 人：Dora Dimanova Karagiozova

　　时  　 间：2019年6月28日上午10:00-12:00

　　地　   点：中关村校区3号教学楼301教室

　　主办单位：研究生院、机电学院

　　报名方式：登录乐动（中国）微信企业号---第二课堂---课程报名中选择“【百家大讲堂】第216期：先进的吸能防爆材料 ”

 

【主讲人简介】

 Dora Dimanova Karagiozova教授现任职于保加利亚科学院力学所，是冲击动力学领域的知名专家。任International Journal of Impact Engineering，Latin American Journal of Solids and Structures和Journal of Theoretical and Applied Mechanics期刊编辑委员会委员，并任ERC CoG panel “Products and Processes Engineering”委员会委员。 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.

 

【讲座信息】

报告主要介绍特殊的核芯材料在准静态和高速动态加载时的某些现象、宏观尺度下的变形机制以及数值模拟。评价微观和中细观机理对工程设计中重要组分多孔材料的动态压缩行为的作用。同时，将介绍三明治结构的一些应用实例，并与实体材料的响应进行对比。

 

 

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.