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基于PFC的沥青混凝土铣削仿真及刀具安装优化
发表时间：2011-08-31 浏览量：2220 下载量：794
| 全部作者： | 邢国，周里群，王震，唐娟 |
| 作者单位： | 湘潭大学机械工程学院；长沙中联重工科技发展股份有限公司 |
| 摘 要： | 基于离散元对沥青混凝土流变特性模拟的优越性，对其切削过程进行动态仿真，克服了传统连续介质力学模型的宏观连续性假设的局限性，可以从微观角度对切削过程进行可视化数值模拟。研究结果表明：通过单轴压缩试验校正后的模型，得到在不同切削角下切削过程中刀具前刀面受力变化规律，并得出刀具在安装工程中优先选择5～20°切削角的结论，为工程实际提供了参考。 |
| 关 键 词： | 机械制造自动化；沥青混凝土；离散元；切削力；摩擦力；刀具安装优化 |
| Title： | Dynamic model based on PFC of asphalt concrete cutting process and optimization of tools installation |
| Author： | XING Guo, ZHOU Liqun, WANG Zhen, TANG Juan |
| Organization： | School of Mechanical Engineering, Xiangtan University; Changsha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
| Abstract： | In this paper, based on the superiority of the simulation of the asphalt concrete’s rheological properties with the discrete element method, milling machine cutting process of asphalt concrete was simulated, which overcomes the limitations of the macro continuity hypothesis based on traditional continuum mechanics model, and can make this cutting process visible from microcosmic angle. The research results indicated that the model checked by uniaxial compression test, gets change rule of cutting force and friction force in different cutting angle on cutting knife surface of cutting tools, and gets the conclusion that 5-20 degrees cutting angle in installation work is good to tools’ life. |
| Key words： | mechanical manufacture and automation; asphalt concrete; discrete element method; cutting force; friction force; optimization of tools installation |
| 发表期数： | 2011年8月第16期 |
| 引用格式： | 邢国，周里群，王震，等. 基于PFC的沥青混凝土铣削仿真及刀具安装优化[J]. 中国科技论文在线精品论文，2011，4（16）：1481-1486. |
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