Extension of three-dimensional discontinuous deformation analysis to frictional-cohesive materials
Extension of three-dimensional discontinuous deformation analysis to frictional-cohesive materials
复制标题
将三维不连续变形分析扩展到摩擦粘性材料
DOI：
10.1016/j.ijrmms.2016.03.021
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发表时间：
2016-07
影响因子：
7.2
通讯作者：
Lou Sha
中科院分区：
文献类型：
--
作者：
Zhang Hong;Liu Shuguang;Chen Guangqi;Zheng Lu;Zhang Yingbin;Wu Yanqiang;Jing Peideng;Wang Wei;Han Zheng;Zhong Guihui;Lou Sha
本文将三维非连续变形分析（3-DDDA）扩展到岩土材料和结构的摩擦-粘聚破坏行为的模拟。首先，提出了一种新的接触检测方法，成功地识别了任意形状多面体块体之间的主要子接触和连接区域。其次，为了保证三维DDA模拟的准确性，提出了一种基于分布粘聚力而非集中粘聚力的修正的Mohr-Coulomb破坏准则下的节理接触模型。最后，通过多面体块体系统的节点接触检测、临界稳定性和破坏模式三个算例对扩展三维DDA进行了验证。最后，动态地展示了多个相互作用块体的大位移和旋转破坏的完整过程。这些算例表明，扩展的三维DDA能够准确模拟摩擦粘结材料和结构的破坏行为，从而优化材料和结构的稳定或保护设计
This paper extends three-dimensional discontinuous deformation analysis (3-D DDA) to model the frictional-cohesive failure behavior of geotechnical materials and structures. Firstly, a new contact detection scheme was developed to successfully identify the dominant sub-contacts and areas of the joints between arbitrarily shaped polyhedral blocks. Secondly, a modified joint contact model subjected to the Mohr-Coulomb failure criteria based on distributed cohesion instead of concentrated cohesion, was.proposed to ensure the accuracy of the simulation by 3-D DDA. Thirdly, the extended 3-D DDA was verified by three examples, including joint contact detection, critical stability and failure mode of a system of polyhedral blocks. Finally, the complete failure process involving large displacement and rotation of multiple interaction blocks is exhibited dynamically. Overall, these examples exhibit that the extended 3-D DDA is now capable of accurately modeling the failure behavior of frictional-cohesive materials and structures, so as to optimize the material and structure stabilization or protection design
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用于三维不连续变形分析的边对边接触模型
影响因子：
5.3
作者：
Jiang QH;Yeung MR;Sun N
通讯作者：
Sun N
影响因子：
5.3
作者：
Jian Hong Wu
通讯作者：
Jian Hong Wu
影响因子：
2.3
作者：
Zuan Chen;Xuexin Cheng;Xiaoge Huang;W. Bai;Z.-H. Jin
通讯作者：
Zuan Chen;Xuexin Cheng;Xiaoge Huang;W. Bai;Z.-H. Jin
DOI：
10.1201/b11600-12
发表时间：
2012-01
期刊：
--
影响因子：
--
作者：
T. Ahn;J. Song
通讯作者：
T. Ahn;J. Song
DOI：
10.1002/nag.704
发表时间：
2008-10-25
影响因子：
4
作者：
Grayeli, Roozbeh;Hatami, Kianoosh
通讯作者：
Hatami, Kianoosh