Procedure for optimal infrared heating of PET preform via a simplified 3D Modelling with ventilation

IF 2.6 3区材料科学 Q2 ENGINEERING, MANUFACTURING International Journal of Material Forming Pub Date : 2024-07-02 DOI:10.1007/s12289-024-01843-x

Yun-Mei Luo, Luc Chevalier, Thanh Tung Nguyen

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Abstract

The thermal condition plays an important role in the final thickness distribution and in the mechanical behavior of the Polyethylene Terephthalate (PET) bottle obtained from the stretch blow molding (SBM) process. A complete 3D modelling of the heating stage during the SBM process under industrial condition is very time-consuming. Based on a simplified approach to quickly achieve the numerical simulation of the preform heating, an optimization procedure is proposed to adjust the settings of the infrared lamps by comparing our simulation results to the target temperature profile. In this numerical approach, the radiation source is simulated by using a model for intensity of the incident radiation and the Beer-Lambert law. On the other hand, the ventilation effect under industrial conditions is taken into account by modelling the forced convection around a cylinder. The infrared (IR) flux and ventilation effects are implemented as thermal boundary conditions in COMSOL software for a 3D computation of the thermal problem for the preform only. Since the simulation has a very reasonable computational time, an optimization procedure can be generated to adjust the setting of IR lamps. This optimization tool provides quickly a first set of parameters to help industry to obtain the desired temperature profile.

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通过带通风的简化 3D 模型对 PET 瓶坯进行最佳红外加热的程序

热条件对拉伸吹塑（SBM）工艺获得的聚对苯二甲酸乙二酯（PET）瓶的最终厚度分布和机械性能起着重要作用。在工业条件下，对 SBM 过程中的加热阶段进行完整的三维建模非常耗时。基于快速实现瓶坯加热数值模拟的简化方法，我们提出了一种优化程序，通过将模拟结果与目标温度曲线进行比较来调整红外灯的设置。在这种数值方法中，辐射源是通过入射辐射强度模型和比尔-朗伯定律进行模拟的。另一方面，通过模拟圆柱体周围的强制对流，考虑了工业条件下的通风效应。红外线（IR）通量和通风效应在 COMSOL 软件中作为热边界条件实现，仅对瓶坯的热问题进行三维计算。由于模拟计算时间非常合理，因此可以生成一个优化程序来调整红外灯的设置。该优化工具可快速提供第一组参数，帮助工业界获得所需的温度曲线。

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来源期刊

International Journal of Material Forming ENGINEERING, MANUFACTURING-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.10

自引率

4.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material. The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations. All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.