| 散粒体系统动力学仿真 |
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| 引用本文： | 姜世平,芮筱亭,洪俊,戎保,刘志军.散粒体系统动力学仿真[J].岩土力学,2011,32(8):2529-2532. |
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| 作者姓名： | 姜世平 芮筱亭 洪俊 戎保 刘志军 |
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| 作者单位： | 1. 南京理工大学发射动力学研究所,南京,210094
2. 东南大学工程力学系,南京,210096 |
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| 基金项目： | 国家自然科学基金(No.10902051); 江苏省自然科学基金攀登计划(No.BK2008046) |
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| 摘 要： | 针对多面体粒子组成的散粒体系统,基于离散单元法,建立了每个散粒体的邻居目录,在邻居目录内以射线交叉法判断散粒体间的接触,给出了散粒体系统动力学的仿真方法,有效地实现了对散粒体系统接触碰撞动力学的数值仿真。该方法具有重要的理论价值,可推广应用于众多工程领域的散粒体系统堆积、碰撞动力学仿真。
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| 关 键 词： | 散粒体 离散单元法 射线交叉法 接触碰撞 |
| 收稿时间： | 2010-10-26 |
Dynamic simulation of granular system |
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| JIANG Shi-ping,RUI Xiao-ting,HONG Jun,RONG Bao,LIU Zhi-jun.Dynamic simulation of granular system[J].Rock and Soil Mechanics,2011,32(8):2529-2532. |
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| Authors: | JIANG Shi-ping RUI Xiao-ting HONG Jun RONG Bao LIU Zhi-jun |
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| Institution: | 1. Institute of Launch Dynamics, Nanjing University of Science and Technology, Nanjing 210094, China; 2. Department of Engineering Mechanics, Southeast University, Nanjing 210096, China |
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| Abstract: | Aiming at granular system composed of polyhedral granules,based on discrete element method,the neighbor list is established for each particle.The ray crossing method is applied to the collision detection of polyhedral granules stored in the neighbor list.By these steps,the simulation method for the dynamics of granular system is proposed,which effectively realizes the numerical simulation of the dynamics of granular system.The simulation method has significant theoretical value,which can be used to simulate... |
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| Keywords: | granules discrete element method ray crossing method contact and collision |
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