基于FEM-DEM的大米破碎仿真初探  

Preliminary exploration of rice breaking simulation based on FEM and DEM

作　　者：宋少云[1] 李祖吉[1] 王辉 程科 陈德炳 

机构地区：[1]武汉轻工大学机械工程学院,湖北武汉430023 [2]国粮武汉科学研究设计院有限公司,湖北武汉430079

出　　处：《粮食与饲料工业》2015年第10期1-4,共4页Cereal & Feed Industry

基　　金：粮食公益性行业科研专项经费资助项目(项目编号:201313012)

摘　　要：提出了大米破碎仿真的一个整体框架,该框架将抽样裂纹检测、含裂纹大米的有限元建模和仿真、大米的离散元建模和仿真以及碾米机的参数修改结合在一起,构成了一个有序的统一体。研究了基于扩展有限元的大米破碎仿真,并以松粳9号糙米为例进行了裂纹扩展仿真。仿真结果表明,上述框架和裂纹扩展仿真技术可以应用在碾米机的结构设计和工艺参数确定中,并对类似颗粒物加工机械的设计和应用有一定的参考意义。A whole framework of rice breaking simulation was proposed,in which four process were integrated：fracture detection of rice sample,finite element modeling and simulation of broken rice,discrete element modeling and simulation of broken rice,and parameter modification of rice milling machine.Rice breaking simulation based on XFEM was studied and a sample of song 9 was illustrated the crack development simulation.It suggested that the proposed framework and crack development simulation technology could be used in the structure design and process parameters determination of rice milling machine,and it was of reference significance to analogous particulate matter process machine.

关 键 词：大米 裂纹 扩展有限元法 碾米机 含碎率 联合仿真 

分 类 号：TS212[轻工技术与工程—粮食、油脂及植物蛋白工程] TP391.9[轻工技术与工程—食品科学与工程]