模拟月壤微观结构形态的定量化研究新方法
CSTR:
作者:
作者单位:

同济大学土木工程防灾国家重点实验室,同济大学土木工程防灾国家重点实验室,同济大学土木工程防灾国家重点实验室,同济大学土木工程防灾国家重点实验室

中图分类号:

TU43

基金项目:

国家杰出青年科学基金(编号51025931),国家自然科学基金(编号51179128)


A New Method for Experimental Investigation of Microstructure Morphology of Lunar Soil Simulant
Author:
  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [18]
  • |
  • 相似文献 [20]
  • |
  • 引证文献
  • | |
  • 文章评论
    摘要:

    针对土体的微观结构测试设备价格较高、操作相对复杂以及传统的微观结构测试主要针对单一粒组进行的缺陷,以同济一号(简称TJ 1)模拟月壤为例,介绍了一种可测定由不同粒组组成的砂样微观结构参数(如长短轴比例、粗糙度)的新方法.通过电镜扫描获取TJ 1模拟月壤不同粒组颗粒的高倍清晰照片,利用AutoCAD和MATLAB软件获取各粒组的微观结构参数.采用离散元数值试验,近似确定TJ 1模拟月壤中各粒组颗粒所受接触力占所有颗粒接触力的权重,并与各粒组形态参数的平均值相结合,采用加权平均,最终获取TJ 1模拟月壤形态参数的代表值.

    Abstract:

    In practice, the advanced test equipment for soil microstructure morphology are very expensive and complicated to operate. Conventional studies on microstructure morphology generally focus on sands with one single fraction. A new test method, which can derive the microstructure parameters (e.g. aspect ratio, roughness) of TJ 1 lunar soil simulant consisting of various fractions, was introduced in this paper. First, high definition images of particles in different fractions were obtained by using a scanning electron microscopy (SEM). Then the microstructure parameters of each fraction were obtained by using the AutoCAD and Matlab software. Finally, the weight of morphological parameters of each fraction were gained using the distinct element method analyses, and the corresponding representative parameters of the whole specimen were calculated by using the weighted average method.

    参考文献
    [1]刘青秉,项 伟, BUDHU M等. 砂土颗粒形状量化及其对力学指标的影响分析[J]. 岩土力学,2011,32(S1): 190-197.LIU Qing-bing, XIANG Wei, BUDHU M, et al. Study of particle shape quantification and effect on mechanical property of sand[J]. Rock and Soil Mechanics, 2011, 32(S1): 190-197.
    [2]刘 瑜,夏唐代. 砂土颗粒粗糙度对剪切波速影响的试验研究[J]. 岩土工程学报,2011,33(2): 285-290.LIU Yu, XIA Tang-dai. Experimental study on influence of particle roughness on shear wave velocity of sand [J]. Chinese Journal of Geotechnical Engineering, 2011, 33(2): 285-290.
    [3]JIANG M J, LEROUEIL S, ZHU H H, et al. Two- dimensional discrete element theory for rough particles [J]. International Journal of Geomechanics, 2009, 9(1): 20-33.
    [4]唐朝生,施斌,王宝军.基于SEM土体微观结构研究中的影响因素分析[J]. 岩土工程学报,2008,30(4):560~565.TANG Chao-sheng, SHI Bin, WANG Bao-jun. Factors affecting analysis of soil microstructure using SEM [J]. Chinese Journal of Geotechnical Engineering, 2008,30(4):560~565.
    [5]王慧妮,倪万魁.基于计算机X 射线断层术与扫描电镜图像的黄土微结构定量分析[J]. 岩土力学,2012,33(1): 243-248.WANG Hui-ni,NI Wan-kui. Quantitative analysis of loess microstructure based on CT and SEM images [J]. Rock and Soil Mechanics, 2012,33(1): 243-248.
    [6]李丽华,唐辉明,刘数华. 月壤及模拟月壤微观结构的研究[J]. 岩土力学,2012,33(1): 243-248.LI Li-hua,TANG Hui-ming,LIU Shu-hua. Microstructure of lunar soil and lunar soil simulant[J]. Rock and Soil Mechanics, 2012,33(1): 243-248.
    [7]ALSHIBLI K A, ALSALEH M I. Characterizing surface roughness and shape of sands using digital microscopy [J]. Journal of Computing in Civil Engineering, 2004, 18(1): 36-45.
    [8]WHITE D J, TAKE W A, BOLTON M D. Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry [J]. Géotechnique, 2003, 53(7): 619-631.
    [9]孙红,葛修润,牛富俊等. 上海粉质粘土的三轴CT实时细观试验[J]. 岩土力学与工程学报,2005,24(24): 4559-4564.SUN Hong, GE Xiu-run, NIU Fu-jun, et al. Real-time CT meso-testing on Shanghai silty clay subjected to triaxial loading [J]. Chinese Journal of Rock Mechanics and Engineering. 2005, 24(24): 4559-4564.
    [10]SHI B, LI S L, TOLKACHEV M. Quantitative approach on SEM images of microstructure of clay soils [J]. Science in China (Series B), 1995, 38(6): 741-748.
    [11]Lunar sourcebook: A user's guide to the Moon [M]. CUP Archive, 1991.
    [12]Chang C S, Hicher P Y. Model for granular materials with surface energy forces [J]. Journal of Aerospace Engineering, 2009, 22(1):43-52.
    [13]Mitchell J K, Bromwell L G, Carrier W D, et al. Soil mechanical properties at the Apollo 14 site[J]. Journal of Geophysical Research, 1972, 77(29): 5641-5664.
    [14]蒋明镜,李立青. TJ-1模拟月壤的研制[J]. 岩土工程学报,2011,33(2): 209-214.JIANG Ming-jing, LI Li-qing. TJ-1 lunar soil simulant [J]. Chinese Journal of Geotechnical Engineering, 2011, 33(2): 209 -214.
    [15]JIANG M J, LI L Q, SUN Y G. Properties of TJ-1 lunar soil simulant [J]. Journal of Aerospace Engineering, 2012, 25(3): 463-469.
    [16]胡荣泽,刘森英. 颗粒的表面粗糙度[J]. 粉体技术,1998,4(3): 1-3.HU Rong-ze, LIU Sen-ying. Surface roundness of particles[J]. Powder Science and Technology, 1998, 4(3): 1-3.
    [17]CARRIER W D, OLHOEFT G R, MENDELL W. Physical properties of the lunar surface, in Lunarbook[M]. Cambridge: Cambridge University Press, 1991.
    [18]JIANG M J, LEROUEIL S, KONRAD J M. An efficient technique for generating homogeneous specimens for DEM studies [J]. Computers and Geotechanics, 2003, 30(5): 579-597.
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

蒋明镜,奚邦禄,李立青,戴永生.模拟月壤微观结构形态的定量化研究新方法[J].同济大学学报(自然科学版),2015,43(8):1123~1128

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-07-07
  • 最后修改日期:2015-04-29
  • 录用日期:2015-03-31
  • 在线发布日期: 2015-08-07
文章二维码