| 离散元计算的位移控制方法 |
| |
| 引用本文： | 陈文胜,柏署,杨燕. 离散元计算的位移控制方法[J]. 岩土力学, 2007, 28(7): 1304-1308 |
| |
| 作者姓名： | 陈文胜 柏署 杨燕 |
| |
| 作者单位： | 长沙理工大学 岩土工程研究所，长沙 410076 |
| |
| 摘 要： | 基于离散单元的动态松弛法，提出了由每循环步允许块体最大位移增量控制每步块体求解的方法--位移控制法。该方法通过对块体的位移试算来决定时步的大小，不仅解决了离散元计算中的如叠合过大等问题，还可以提高计算的精度和效率。编制了相应的程序和程序流程图，并给出了算例分析。
|
| 关 键 词： | 离散单元法 动态松弛 位移控制 时步 |
| 文章编号： | 1000-7598-（2007）07-1304-05 |
| 收稿时间： | 2006-03-28 |
| 修稿时间： | 2006-03-28 |
Control displacement solution for discrete element method analysis |
| |
| CHEN Wen-sheng,BAI Shu,YANG Yan. Control displacement solution for discrete element method analysis[J]. Rock and Soil Mechanics, 2007, 28(7): 1304-1308 |
| |
| Authors: | CHEN Wen-sheng BAI Shu YANG Yan |
| |
| Affiliation: | Institute of Geotechnical Engineering, Changsha University of Science and Technology, ChangSha 410076, China |
| |
| Abstract: | Based on dynamic relaxation of discrete element method(DEM),a control displacement solution for displacement integral is proposed to solve the problem caused by unreasonable time-step interval impacting on the stability of the result.The time-step interval is determined by pre-calculating the displacements of the discrete blocks.The proposed solution not only solves the problem of excessive overlap between blocks,but also improves the precision of displacement integral and calculating efficiency.The relevant program is developed with its flow chart,and a typical example is given in this paper. |
| |
| Keywords: | discrete element method dynamic relaxation control displacement step-time interval |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
|
点击此处可从《岩土力学》下载全文 |
