宋卫生,魏庆葆.食品包装中化学物迁移的有限元分析[J].包装工程,2015,36(11):42-45,113.
SONG Wei-sheng,WEI Qing-bao.Migration of Chemical Constitutes in Food Packages with Finite Element Method[J].Packaging Engineering,2015,36(11):42-45,113. |
| 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 |
| 投稿时间：2014-11-12 修订日期：2015-06-10 |
| DOI： |
| 中文关键词: 食品 包装 迁移 有限元 |
| 英文关键词: food package migration finite element |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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