...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Rock Mechanics and Mining Sciences >Application of the discontinuous deformation analysis method to stress wave propagation through a one-dimensional rock mass
【24h】

Application of the discontinuous deformation analysis method to stress wave propagation through a one-dimensional rock mass

机译：非连续变形分析方法在应力波通过一维岩体传播中的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The analysis of stress wave propagation through a rock mass is an important issue in rock engineering, and the discontinuous deformation analysis (DDA) method provides an effective tool to solve this problem. In this paper, based on the motion equations of block system with the Newmark integration method, the DDA method improved by the viscous boundary and the force input method is employed, and some investigations are made to extend the capability of the DDA method to address the wave propagation problem. First, for providing a quantitative method to control the damping of the DDA method, the computing methods of the damping ratio for both viscous damping and numerical damping are presented, which can effectively simulate the energy dissipation of stress wave propagation. Second, based on the one-dimensional DDA model, a further study on the size choice of a sub block for stress wave propagation is developed, which considers the homogeneous rock and the joint rock mass, and suggested values of block element ratio for both P-wave incidence and S-wave incidence are obtained by comparing with the theoretical solutions. Last, abilities of the DDA method to simulate both the no tension and slipping characteristics of a joint are validated, and the effects of the joint on wave propagation are also investigated. (C) 2015 Elsevier Ltd. All rights reserved.
机译：应力波在岩体中传播的分析是岩石工程中的重要问题，不连续变形分析（DDA）方法为解决该问题提供了有效的工具。本文基于采用Newmark积分方法的块体系统运动方程，利用粘性边界改进了DDA方法，并采用了力输入法，并进行了一些研究以扩展DDA方法解决问题的能力。波传播问题。首先，为提供一种定量的方法来控制DDA方法的阻尼，提出了粘性阻尼和数值阻尼的阻尼比计算方法，可以有效地模拟应力波传播的能量耗散。其次，基于一维DDA模型，进一步研究了应力波传播的子块的尺寸选择，其中考虑了均质岩体和节理岩体，并给出了两个P的块体比的建议值通过与理论解进行比较，获得了S波入射和S波入射。最后，验证了DDA方法模拟接头的无张力和滑动特性的能力，并研究了接头对波传播的影响。 （C）2015 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号