Optimization of precharge placement in sheet molding compound process

IF 2.6 3区材料科学 Q2 ENGINEERING, MANUFACTURING

International Journal of Material Forming Pub Date : 2024-06-01 DOI:10.1007/s12289-024-01836-w

Fariba Ebrahimian, Sebastian Rodriguez, Daniele Di Lorenzo, Francisco Chinesta

引用次数: 0

Abstract

This study aims to provide precise predictions for the compression of reinforced polymers during the sheet Molding Compound (SMC) process, ensuring the attainment of a predefined structure while preventing material overflow during the process. The primary challenge revolves around identifying the optimal initial shape to prevent material rebound during the process. To confront this issue, a numerical model is utilized, faithfully simulating the SMC process and forming the foundation for our investigations. Furthermore, to optimize the pre-fill stage, a surrogate model is proposed to enhance modeling efficiency, and then an inverse analysis method is applied. This approach of minimizing material rebound during the SMC process results in a reliable metamodel to predict an initial mass shape accurately and at a low computational cost, thus ensuring the squeezed material fits the mold shape.

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优化片材模塑复合工艺中的预填充位置

本研究旨在为片状模塑料（SMC）工艺中增强聚合物的压缩提供精确预测，确保达到预定结构，同时防止工艺过程中材料溢出。主要挑战在于确定最佳初始形状，以防止材料在加工过程中反弹。为了解决这个问题，我们使用了一个数值模型，忠实地模拟了 SMC 工艺，为我们的研究奠定了基础。此外，为了优化预填充阶段，我们提出了一个替代模型来提高建模效率，然后应用了一种反分析方法。这种在 SMC 过程中尽量减少材料反弹的方法产生了一种可靠的元模型，能以较低的计算成本准确预测初始质量形状，从而确保挤压材料符合模具形状。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.