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[1]王 芳.7次软物质准晶的裂纹扩展问题的分析[J].绵阳师范学院学报,2018,(08):64-70.[doi:10.16276/j.cnki.cn51-1670/g.2018.08.012]
 WANG Fang.An Analysis of the Crack Problem of the Soft-matter Quasicrystals with 7-fold Symmetry[J].Journal of Mianyang Normal University,2018,(08):64-70.[doi:10.16276/j.cnki.cn51-1670/g.2018.08.012]
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7次软物质准晶的裂纹扩展问题的分析(PDF)
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《绵阳师范学院学报》[ISSN:1672-612X/CN:51-1670/G]

卷:
期数:
2018年08期
页码:
64-70
栏目:
物理与电子信息技术
出版日期:
2018-08-07

文章信息/Info

Title:
An Analysis of the Crack Problem of the Soft-matter Quasicrystals with 7-fold Symmetry
文章编号:
1672-612X(2018)08-0064-07
作者:
王 芳
朔州师范高等专科学校自然科学系,山西朔州 036002
Author(s):
WANG Fang
Department of Natural Science, Shuozhou Normal college, Shuozhou, Shanxi 036002
关键词:
软物质准晶 裂纹 有限差分法
Keywords:
soft-matter quasicrystalscrackfinite difference method
分类号:
O344.3
DOI:
10.16276/j.cnki.cn51-1670/g.2018.08.012
文献标志码:
A
摘要:
以软物质准晶的流体动力学理论为基础,讨论含Griffith中心裂纹矩形试样的7次软物质准晶的动力学裂纹扩展,采用有限差分法求解得到一些有效的数值结果.考查裂纹尖端处应力场的时空变化规律,进而研究此处的应力强度因子随时间的变化,揭示了软物质准晶的动力学物理特性.并以7次对称软物质准晶为例验证了第二类软物质准晶的较稳定的力学性质,得出软物质准晶的裂纹扩展过程是弹性应力与流体应力竞争的结果.同时,分析了其特有的声子-相位子耦合效应.
Abstract:
From the perspective of the theory of hydrodynamics of soft-matter quasicrystals, the dynamic crack propagation in soft-matter quasicrystals with 7mm symmetry was discussed, of which is the rectangular sample with a Criffith crack in the center. The method of finite difference was applied to solve the problem and some effective numerical results were obtained. The spatial-domain variation about the stress field around the crack tip was investigated, further more the variation of the dynamics stress intensity factor versus time at this point was studied. The dynamic physical characteristics of the soft-matter quasicrystals were revealed, and the safety mechanics behavior of the second kind of soft-matter quasicrystals was checked, for which 7-fold soft-matter quasicrystals was a case, and it was concluded that the cracking process of soft-matter quasicrystals is a process of competition between action of elastic stress and fluid stress to each other. At the same time, the peculiar phonon-phason coupling effect was analyzed.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-05-09
基金项目:国家自然科学基金资助项目(11272053).
作者简介:王芳(1983- ),女,山西朔州人,讲师,硕士,研究方向:准晶动力学.
更新日期/Last Update: 2018-08-07