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A semi-spring and semi-edge combined contact model in CDEM and its application to analysis of Jiweishan landslide
文献类型：期刊论文
| 作者 | Feng C(冯春) ; Li SH(李世海); Liu XY(刘晓宇); Zhang YN(张亚南); Zhang YN(张亚南); Liu XY(刘晓宇); Li SH(李世海); Feng C(冯春); Zhang YN(张亚南)
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| 刊名 | Journal of Rock Mechanics and Geotechnical Engineering
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| 出版日期 | 2014 |
| 卷号 | 6期号:1页码:26-35 |
| 关键词 | Continuum-based discrete element method (CDEM) Contact detection method Semi-spring Semi-edge Landslide |
| ISSN号 | 1674-7755 |
| 中文摘要 | Continuum-based discrete element method (CDEM) is an explicit numerical method used for simulation of progressive failure of geological body. To improve the efficiency of contact detection and simplify the calculation steps for contact forces, semi-spring and semi-edge are introduced in calculation. Semispring is derived from block vertex, and formed by indenting the block vertex into each face (24 semisprings for a hexahedral element). The formation process of semi-edge is the same as that of semi-spring (24 semi-edges for a hexahedral element). Based on the semi-springs and semi-edges, a new type of combined contact model is presented. According to this model, six contact types could be reduced to two, i.e. the semi-spring target face contact and semi-edge target edge contact. By the combined model, the contact force could be calculated directly (the information of contact type is not necessary), and the failure judgment could be executed in a straightforward way (each semi-spring and semi-edge own their characteristic areas). The algorithm has been successfully programmed in C++ program. Some simple numerical cases are presented to show the validity and accuracy of this model. Finally, the failure mode, sliding distance and critical friction angle of Jiweishan landslide are studied with the combined model. |
| 收录类别 | EI ; CSCD |
| 语种 | 英语 |
| CSCD记录号 | CSCD:5067031 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/55148]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 GB/T 7714 | Feng C,Li SH,Liu XY,et al. A semi-spring and semi-edge combined contact model in CDEM and its application to analysis of Jiweishan landslide[J]. Journal of Rock Mechanics and Geotechnical Engineering,2014,6(1):26-35. |
| APA | 冯春.,李世海.,刘晓宇.,张亚南.,Zhang YN.,...&Zhang YN.(2014).A semi-spring and semi-edge combined contact model in CDEM and its application to analysis of Jiweishan landslide.Journal of Rock Mechanics and Geotechnical Engineering,6(1),26-35. |
| MLA | 冯春,et al."A semi-spring and semi-edge combined contact model in CDEM and its application to analysis of Jiweishan landslide".Journal of Rock Mechanics and Geotechnical Engineering 6.1(2014):26-35. |
入库方式： OAI收割
来源：力学研究所
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