Strain analysis for PBX plate with hole under tension based on digital image correlation method

被引：0
|
作者：
Liu C. [1 ,2 ]
Lan L.-G. [1 ]
Tang M.-F. [1 ]
Li M. [1 ]
机构：
[1] Institute of Chemical Materials, CAEP, Mianyang
[2] Graduate School Chinese Academy of Engineering Physics, Mianyang
来源：
Li, Ming (li_ming@caep.cn) | 1600年 / Institute of Chemical Materials, China Academy of Engineering Physics卷 / 24期
关键词：
Digital image correlation method (DICM); Polymer-bonded explosive (PBX); Strain analysis; Strain concentration;
D O I：
10.11943/j.issn.1006-9941.2016.04.010
中图分类号：
学科分类号：
摘要：
To study the effect of hole structure on tensile behavior of polymer-bonded explosive(PBX), a plate specimen with-hole was designed and digital image correlation method (DICM) was applied for strain analysis. The quasi-static tension results show that brittle fracture occurs at the edge of hole. Moreover, as the main characteristic failure parameter, the strain component εyy, reaches the critical value at the horizontal edge of the hole, and then cracks initiates and propagates to failure. Except for the significant heterogeneity and asymmetry, the strain distribution agrees well with the theoretical analysis. The inhomogeneity and microscopic defects of the materials may take a major responsibility for the imperfect distribution of the strain field. The defects near the hole may remarkably deteriorate the strength of the structure, even though the strain concentration around the hole is the critical reason of specimen failure. © 2016, Editorial Board of Chinese Chinese Journal of Energetic Materials. All right reserved.
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页码：368 / 374
页数：6
相关论文
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