岩石试件端面摩擦效应数值模拟研究

刘继国 曾亚武

刘继国, 曾亚武. 2005: 岩石试件端面摩擦效应数值模拟研究. 工程地质学报, 13(2): 247-251.
引用本文: 刘继国, 曾亚武. 2005: 岩石试件端面摩擦效应数值模拟研究. 工程地质学报, 13(2): 247-251.
LIU Jiguo, ZENG Yawu. 2005: NUMERICAL SIMULATION OF THE END FRICTIONAL EFFECT OF ROCK SPECIMENS. JOURNAL OF ENGINEERING GEOLOGY, 13(2): 247-251.
Citation: LIU Jiguo, ZENG Yawu. 2005: NUMERICAL SIMULATION OF THE END FRICTIONAL EFFECT OF ROCK SPECIMENS. JOURNAL OF ENGINEERING GEOLOGY, 13(2): 247-251.

岩石试件端面摩擦效应数值模拟研究

详细信息
    作者简介:

    刘继国(1976-),男,在读硕士,从事岩土力学数值模拟方面的学习和研究工作.Emai:lliujiguogg@21cn.com

  • 中图分类号: TU458

NUMERICAL SIMULATION OF THE END FRICTIONAL EFFECT OF ROCK SPECIMENS

  • 摘要: 试件端面摩擦效应直接影响试件内的塑性等效应变、侧向位移的分布和单元应力应变曲线。本文运用ANSYS中的接触单元模拟了平面应变状态下端面摩擦效应对塑性等效应变、侧向位移和单元应力应变曲线的影响,得到了不同摩擦系数时塑性等效应变及侧向位移的渐进变化形式。当接触面摩擦较小时,塑性等效应变图案为上下两个X形网络,侧向位移上下分布均匀;当接触面摩擦增大时,塑性等效应变网络向中部靠拢并且明显增大,侧向位移上下分布不均匀,中部较上下端面位移大;当试件端面侧向位移被限制,即摩擦力很大时,塑性等效应变网络变为一个X形局部化带,侧向位移分布更加不均匀,中部明显隆起。
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出版历程
  • 收稿日期:  2004-07-28
  • 修回日期:  2004-08-30
  • 刊出日期:  2005-04-22

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