期刊文献+

基于能量梯度消减最大原理模拟混凝土开裂的初探

在线阅读 下载PDF
导出
摘要 本文采用水文模型中河网识别的能量梯度消减最大原理模拟混凝土开裂。首先采用有限元程序计算出三点弯曲混凝土切口梁的等效应力分布,根据单元中应力值,利用单元能量梯度消减最大原理确定每个单元的开裂方向,形成整体开裂方向矩阵;接着依次搜索开裂方向矩阵,计算开裂度矩阵;然后通过试算后确定的开裂度阀值判断是否开裂单元及开裂走向,将开裂的网格连接后,就形成最终裂缝。最后,本文以混凝土三点弯曲梁为算例,说明利用能量梯度消减最大方法来进行混凝土裂缝扩展的模拟的可行性。
出处 《山东工业技术》 2015年第23期100-101,共2页 Journal of Shandong Industrial Technology
  • 相关文献

参考文献4

  • 1Ngo D. Scordelis A.C., Finite element analysis of reinforced concrete Design, 1968(07): p. 334-344.
  • 2Ted Belytschko Tom Black, Elastic crack growth in finite elements with minimal rcmeshing. International journal for numerical methods in engineering, 1999.45(05): p. 601-620.
  • 3Ted BelytschkoNicolas MoesShuji Usui Chandu Parimi, Arbitrary discontinuities in finite elements. International Journal for Numerical Methods in Engineering, 2001.50(04): p. 993-1013.
  • 4刘远,周买春,陈芷菁,李绍文.基于不同DEM数据源的数字河网提取对比分析——以韩江流域为例[J].地理科学,2012,32(9):1112-1118. 被引量:40

二级参考文献20

  • 1俞雷,刘洪斌,武伟.基于DEM的重庆三峡库区水系提取试验研究[J].地理科学,2006,26(5):616-621. 被引量:18
  • 2易卫华,张建明,匡永生,米丽娜.水平分辨率对DEM流域特征提取的影响[J].地理与地理信息科学,2007,23(2):34-38. 被引量:24
  • 3Tribe Andrea. Automated recognition of valley lines and drain- age networks from grid digital elevation models: A review and a new method[J]. Journal of Hydrology, 1992, 139: 263-293.
  • 4Martz L W, Garbrecht J. Numerical definition of drainage net-work and sub-catchment areas from digital elevation models[J]. Computers & Geosciences, 1992, 18 (6): 747-761.
  • 5O' Callaghan J F, Mark D M. The extraction of drainage net- works from digital elevation data[J]. Computer Vision, Graph- ics, and Image Processing, 1984, 28: 323-344.
  • 6Valeo C, Moin S M A. Grid-resolution effects on a model for in- tegrating urban and rural areas[J]. Hydrological Processes, 2000, 14 (14): 2505-2525.
  • 7U.S. Geological Survey. HYDROlk Elevation Derivative Data- base[EB/OL], http://eros.usgs.gov/Find_Data/Products and Da- ta_ Available/gtopo3 0/hydro/.
  • 8Jarvis A, Reuter H I, Nelson A, et al. Hole-filled seamless SRTM data V4, International Centre for Tropical Agriculture (CIAT)[EB/OL]. 2008, http://srtm.csi.giar.org.
  • 9Earth Remote Sensing Data Analysis Center (ERSDAC). ASTER GDEM[EB/OL]. http://www.gdem.aster.ersdac.or.jp/search.j sp.
  • 10Kuniyoshi Takeuchi, Tianqi Ao. Introduction of block-wise use of TOPMODEL and Muskingum-Cunge method for the hy- dro-environment simulation of a large ungauged basin[J]. Hy- drological Sciences Journal, 1999, 44 (4): 633-646.

共引文献39

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部