| 离散单元法中数值求解方法的改进 |
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| 引用本文： | 王强,吕西林. 离散单元法中数值求解方法的改进[J]. 同济大学学报(自然科学版), 2006, 34(12): 1573-1577 |
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| 作者姓名： | 王强 吕西林 |
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| 作者单位： | 1. 同济大学,土木工程防灾国家重点实验室,上海,200092;沈阳建筑大学,土木工程学院,辽宁,沈阳,110168
2. 同济大学,土木工程防灾国家重点实验室,上海,200092 |
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| 摘 要： | 对离散单元法中的数值求解提出采用同步动态松弛法，以避免动态松弛法由于路径相关性所造成的算法误差．数值计算结果表明，同步动态松弛法简单、有效，且计算较为稳定，精度较高，并可使计算时步取得稍大一些，从而较大地加快了离散单元法的计算速度．
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| 关 键 词： | 结构计算 离散单元法 同步动态松弛法 计算时步 |
| 文章编号： | 0253-374X（2006）12-1573-05 |
| 收稿时间： | 2005-04-18 |
| 修稿时间： | 2005-04-18 |
Numerical Algorithm of Distinct Element Method |
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| WANG Qiang,LU Xilin. Numerical Algorithm of Distinct Element Method[J]. Journal of Tongji University(Natural Science), 2006, 34(12): 1573-1577 |
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| Authors: | WANG Qiang LU Xilin |
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| Affiliation: | 1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; 2. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China |
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| Abstract: | The synchrony dynamic relaxation method is put forward for the numerical algorithm of distinct element method. It can avoid the numerical error arising from the route correlation of dynamic relaxation method. It is proved in this paper that the synchrony dynamic relaxation method is simple, reliable as well as stable and accurate. Simultaneously, the iteration interval can be enlarged to significantly improve the computing speed of the distinct element method. |
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| Keywords: | structural analysis distinct element method synchrony dynamic relaxation method iteration interval |
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