食品包装中化学物迁移的有限元分析  

Migration of Chemical Constitutes in Food Packages with Finite Element Method

作　　者：宋卫生[1] 魏庆葆[1] 

机构地区：[1]河南牧业经济学院,郑州450046

出　　处：《包装工程》2015年第11期42-45,113,共5页Packaging Engineering

摘　　要：目的根据非稳态质量扩散方程和瞬态热传导方程在数学形式上的相似性,研究利用商业有限元软件Ansys的热分析模块来模拟分析食品包装内化学物向食品迁移过程的方法。方法在Ansys中将扩散过程和热传导过程中的相关参数对应替代后,通过2D实体模型和plane55单元类型模拟单层包装材料的化学物向内装食品迁移的过程,并将分析结果与数据模拟以及现有迁移分析软件所得出的结果进行对比分析。结果数据模拟与现有迁移分析软件所得出的曲线基本吻合,但是有限元软件Ansys分析得出的曲线在前期和上述2条曲线没有完全吻合度,后期的吻合度较高。结论 Ansys能够模拟化学物迁移到食品之后在食品内的扩散过程,是一种值得进一步挖掘的预测方法。Based on the similarity of the unstable diffusion equation and the transient heat conduction equation in mathematical form, this paper studied the thermal analysis module of the software Ansys to simulate the migration process of chemical compositions from food packages to food. The related parameters of diffusion process were substituted for those of heat conduction in Ansys, simulating the migrating process from monolayer packaging materials to food through building a 2D solid model and using a plane55 element type. And the results were compared with those of the data simulation and the existing migration analysis software. The results showed that the curve by data simulation fit well with that by the existing migration analysis software Akts SML, however, the curve by the finite element software Ansys did not completely fit with the former two curves in early stage, while it highly fit in late stage. As Ansys can simulate the diffusion process in food after migration, the analysis method of Ansys is worthy of further research.

关 键 词：食品 包装 迁移 有限元 

分 类 号：TS207[轻工技术与工程—食品科学]