English  |  正體中文  |  简体中文  |  Items with full text/Total items : 73032/73032 (100%)
Visitors : 23374340      Online Users : 425
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/64873

    Title: 顆粒流對垂直平板撞擊力之數值模擬
    Authors: 張欽舜;CHANG,CHIN-SHUN
    Contributors: 土木工程學系
    Keywords: 顆粒流;崩塌;離散元素法;撞擊力;Granular flows;Collapse;DEM;impact force;PFC-3D
    Date: 2014-07-29
    Issue Date: 2014-10-15 14:31:36 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 撞擊力為土石流運動破壞結構物的重要因素之一。本研究在窄渠道內進行顆粒流崩塌模擬,並分析其流動物理特性及堆積機制,為了解顆粒流內部力量傳遞到板子上過程,使用PFC-3D程式進行數值模擬;數值模擬部分則以聚苯乙烯顆粒為模擬,並在底部黏上粗糙層顆粒,而堆積塊體高寬比a( )=1.4、顆粒填充高度Hf度作為主要對比參數,首先以模擬單顆粒試驗方式輸入參數的正確性,進而以撞擊力及塊體堆積等方式探討撞擊力對側板之影響。
    ;In this study, the impact forces acting on vertical walls by collapsing granular piles. DEM is explored by employing simulation PFC-3D. In the PFC-3D simulation, the observed impact force, inside contact force, unbalanced force, kinetic energy, friction energy loss are examined with different granular pile heights and wall location. The effect of stacking types and deposition are studied impact forces. In the PFC-3D numerical simulation found in the overall physical flow behavior is similar. The maximum impact force is 0.7N dependent on the
    wall location.
    Appears in Collections:[土木工程研究所] 博碩士論文

    Files in This Item:

    File Description SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明