期刊论文

Preliminary exploration of rice breaking simulation based on FEM and DEM

中文

粮食与饲料工业

1003-6202

2015

10

1-4

10.7633/j.issn.1003-6202.2015.10.001

粮食公益性行业科研专项经费资助项目(项目编号:201313012)；

本校为第一机构

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...