English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 58323/91867 (63%)
造訪人次 : 14038425      線上人數 : 98
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/18608


    題名: Two-dimensional Hurst Index of Joint Surfaces
    作者: Yang, Z. Y.;Di, C. C.;Lo, S. C.
    貢獻者: 淡江大學土木工程學系
    關鍵詞: Anisotropy;Brownian movement;Morphology;Rocks;Statistical mechanics;Surface roughness;Joint surfaces;Statistical self-affinity properties;Two dimensional Hurst index;Rock mechanics
    日期: 2001-11
    上傳時間: 2013-08-08 14:49:29 (UTC+8)
    出版者: Vienna: Springer Wien
    摘要: The three-dimensional roughness morphology of joint surfaces affects their mechanical behavior. The one-dimensional joint profiles provide an incomplete and biased characterization of joint surface morphology. A two-dimensional quantitative description of surface roughness is thus needed. This paper extends the Hurst index applied on the one-dimensional profile to the two-dimensional joint surfaces. The two-variable fractal Brownian motion theory is employed successfully to describe the whole degree of roughness on the joint surface. To find this two-dimensional roughness index, two base dimensions and asperity height of the joint surface are enlarged by different ratios to achieve the requirement of statistical self-affinity properties. The Hurst index and thus fractal dimension of two joint surfaces cored from sandstone and schist is examined using the triangular-prism-surface-area method as well as this new method. It is shown that for distinguishing the whole roughness difference between these joint surfaces the new method is better. The asperity height distribution of the joint surface is Gaussian and behaves like a self-affine fractal, while the sampling points are enough. For practical application, a two-dimensional Hurst index H 2D; that is directly expressed in the form of Fourier series represented by the profiles in two properly orthogonal directions is proposed to describe the anisotropy of a whole joint surface.
    關聯: Rock Mechanics and Rock Engineering 34(4), pp.323-345
    DOI: 10.1007/s006030170004
    顯示於類別:[土木工程學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    0723-2632_34(4)p323-345.pdf787KbAdobe PDF1檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋