| 成名,刘维甫,刘凯欣.高速冲击问题的离散元法数值模拟[J].计算力学学报,2009,26(4):591~594 |
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| 高速冲击问题的离散元法数值模拟 |
| Numerical simulation for high-speed impact problems by discrete element method |
| 投稿时间：2008-12-18 |
| DOI：10.7511/jslx20094026 |
| 中文关键词: 离散元法 弹塑性 轴对称 冲击 断裂 |
| 英文关键词:DEM elastoplastic axi-symmetric impact failure |
| 基金项目:国家自然科学基金(10572002,10732010)资助项目. |
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| 摘要点击次数: 1502 |
| 全文下载次数: 1117 |
| 中文摘要: |
| 以能量等效为原则,构建了新的求解弹塑性轴对称问题的离散元模型。通过引入断裂准则,使模型不仅可以应用于连续介质问题,还可以应用于从连续介质向非连续介质的动态转化过程。最后,通过模拟钢板受冲击载荷产生层裂的过程,说明模型在高速冲击问题中的适用性及其有效性。 |
| 英文摘要: |
| A new discrete element method (DEM) model for elastoplastic axi-symmetric problems is established based on the principle of energy equivalence. By introducing a failure criterion, the DEM can be extended to model the transition from a continuum to a non-continuum. Moreover, an example of a steel plate impacted by a steel bullet with a high speed is given, which demonstrate the applicability and effectiveness of the DEM model. |
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