[1]杨福俊,唐兆琛,朱莉,等.闭孔泡沫铝特征统计及其变形行为实验研究[J].东南大学学报(自然科学版),2009,39(2):250-254.[doi:10.3969/j.issn.1001-0505.2009.02.013]
 Yang Fujun,Tang Zhaochen,Zhu Li,et al.Experimental study on cellular structure statistical analysis and uniaxial deformation behavior of closed-cell aluminum foam[J].Journal of Southeast University (Natural Science Edition),2009,39(2):250-254.[doi:10.3969/j.issn.1001-0505.2009.02.013]
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闭孔泡沫铝特征统计及其变形行为实验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第2期
页码:
250-254
栏目:
材料科学与工程
出版日期:
2009-03-20

文章信息/Info

Title:
Experimental study on cellular structure statistical analysis and uniaxial deformation behavior of closed-cell aluminum foam
作者:
杨福俊1 唐兆琛1 朱莉1 何思渊2 何德坪2 何小元1
1 东南大学土木工程学院, 南京 210096; 2 东南大学材料科学与工程学院, 南京 210096
Author(s):
Yang Fujun1 Tang Zhaochen1 Zhu Li1 He Siyuan2 He Deping2 He Xiaoyuan1
1 School of Civil Engineering, Southeast University, Nanjing 210096, China
2 School of Materials Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
闭孔泡沫铝 孔结构特征统计 单轴压缩 孔结构变形 图像相关方法
Keywords:
closed-cell aluminum foam statistics on cellular structures uniaxial compression cellular deformation digital image correlation method(DICM)
分类号:
TG113
DOI:
10.3969/j.issn.1001-0505.2009.02.013
摘要:
以椭圆拟合长方体闭孔多边形泡沫铝表面孔截面,运用统计学的方法研究了泡沫铝试件表面孔的大小、形状和方位等分布特征.统计结果表明:上述孔的各项几何特征参数除方位外服从高斯分布. 应用图像处理技术,获取了单轴压缩变形前后泡沫铝试件的表面图像.利用序列数字图像相关方法对泡沫纯铝变形前后的图像进行相关计算,获得了静态单向压缩条件下闭孔泡沫铝材料表面全场变形及局部孔结构的变形,同时根据试验结果计算了试件的名义应力-应变曲线,给出了压缩过程中孔壁的失效顺序和破坏规律.对块体材料的压缩实验表明,泡沫纯铝是以多个断裂带的形式破坏和吸收能量.
Abstract:
Statistic analysis on the tested Al foam, including cellular size, shape and relative orientation, is performed based on the best-fit ellipse equivalent diameter for the individual cells. It shows that the statistical distribution of cells’ size and shape follow Gauss distribution at significance level of 0.05. Based on calculating correlation of the images captured before and after deformation, digital image correlation method(DICM)is employed to measure the deformation of the closed-cell aluminum foam under uniaxial compression. The whole-field and part of cells deformation and displacement distribution are presented, and the nominal stress-strain curve of the tested specimen is also obtained by DICM. Experimental results show that the foam absorb large energy during fracture bands initiation and developing.

参考文献/References:

[1] Grenestedt J L.Effective elastic behavior of some models for ‘perfect’ cellular solids[J]. Int J of Solids and Structures,1999,36(10):1471-1501.
[2] 王嵩,卢子兴.闭孔Voronoi泡沫的弹性性能分析[J].航空学报,2007,28(3):574-578.
  Wang Song,Lu Zixing.Investigation into elastic properties of closed-cell Voronoi foam[J].Acta Aeronautica ET Astronautica Sinica,2007,28(3):574-578.(in Chinese)
[3] Shen H S,Oppenheimer S M,Dunand D C,et al.Numerical modeling of pore size and distribution in foamed titanium[J]. Mechanics of Materials,2006,38(8/9/10):933-944.
[4] Andrews E,Sanders W,Gibson L J.Compressive and tensile behaviour of aluminum foams[J]. Materials Science and Engineering A,1999,270(2):113-124.
[5] McDonald S A,Mummery P M,Johnson G.Characterization of the three-dimensional structure of a metallic foam during compressive deformation[J].Journal of Microscopy,2006,223(2):150-158.
[6] Balch D K,O’Dwyer J G,Davis G R,et al.Plasticity and damage in aluminum syntactic foams deformed under dynamic and quasi-static conditions[J].Materials Science and Engineering A,2005,391(1/2):408-417.
[7] Wang M,Hu X F,Wu X P.Internal microstructure evolution of aluminum foams under compression[J]. Materials Research Bulletin,2006,41(10):1949-1958.
[8] Motz C,Pippan R.Fracture behaviour and fracture toughness of ductile closed cell metallic foams[J]. Acta Materialia,2002,50(8):2013-2033.
[9] 何其健,宋宏伟,谢季佳,等.基于原位观测的泡沫金属细观与宏观压缩实验研究[J].实验力学,2007 22(6):617-624.
  He Qijian,Song Hongwei,Xie Jijia,et al.On the mesoscopic and macroscopic compression tests of metallic foams based on in situ observation[J]. Journal of Experimental Mechanics,2007,22(6):617-624.(in Chinese)
[10] 房亮,唐兆琛,杨福俊,等.数字图像相关方法在闭孔泡沫铝压缩试验中的应用[J].实验力学,2008,23(2):162-167.
  Fang Liang,Tang Zhaochen,Yang Fujun,et al.Compressive test of closed-cell aluminum foam using digital image correlation method[J].Journal of Experimental Mechanics,2008,23(2):162-167.(in Chinese)
[11] 邹毅,何德坪,蒋家桥.新型球形孔低孔隙率高强度泡沫铝合金[J].中国科学B辑,2004,34(1):168-176.
[12] Yang Fujun,He Xiaoyuan,Quan Chenggen.Characterization of dynamic microgyroscopes by use of temporal digital image correlation[J].Applied Optics,2006,45(30):7785-7790.

相似文献/References:

[1]杨福俊,卢位昌,何小元.芯材厚度及胞孔结构对闭孔泡沫铝三明治梁弯曲性能的影响[J].东南大学学报(自然科学版),2013,43(5):1045.[doi:10.3969/j.issn.1001-0505.2013.05.024]
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备注/Memo

备注/Memo:
作者简介: 杨福俊(1968—), 男, 博士, 副教授, yang-fj@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2006CB601201)、国家自然科学基金资助项目(10727201).
引文格式: 杨福俊,唐兆琛,朱莉,等.闭孔泡沫铝特征统计及其变形行为实验研究[J].东南大学学报:自然科学版,2009,39(2):250-254.
更新日期/Last Update: 2009-03-20