Dynamic fracture effects on remote stress amplification in AGR graphite bricks
Dynamic fracture effects on remote stress amplification in AGR graphite bricks
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DOI：
10.1016/j.nucengdes.2017.01.014
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发表时间：
2017-11-01
影响因子：
1.7
通讯作者：
Tran, Van-Xuan
中科院分区：
文献类型：
--
作者：
Crump, Timothy;Ferte, Guilhem;Tran, Van-Xuan
利用Code_Aster中新开发的粘结单元扩展有限元方法(XCZM)，对二维石墨砖在动态扩展裂纹载荷作用下的动态应力状态进行了初步研究。这是为了研究被称为“迅速二次开裂”(PSC)的现象以及几何特征可能对砖的远程应力状态产生的任何影响。可以看出，可以模拟PSC机制，甲烷孔可能通过改变初始静态应力状态来影响这一现象。(C)2017爱思唯尔B.V.保留所有权利。
An initial investigation, using a newly developed tool within Code_Aster known as the eXtended Finite Element Method with cohesive elements (XCZM), has been undertaken to investigate the dynamic stress state of a 2D graphite brick geometry under the loading of a dynamically propagating crack. This was with the aim of investigating the phenomenon known as `prompt secondary cracking' (PSC) and any effects geometrical features may have on the remote stress state of the brick. It was seen that the PSC mechanism could be modelled, with methane holes possibly having an effect on this phenomenon by altering the initial static stress state. (C) 2017 Elsevier B.V. All rights reserved.