焊接线对纤维增强热塑性塑料机械行为影响的计算建模

IF 4.4 2区 工程技术 Q1 MECHANICS European Journal of Mechanics A-Solids Pub Date : 2024-11-01 DOI:10.1016/j.euromechsol.2024.105485
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引用次数: 0

摘要

焊缝所在区域是冲击强度和拉伸强度的薄弱区域,会对最终产品的整体强度产生负面影响。它还会造成表面视觉缺陷,影响美观。注塑成型工艺会在材料中引入各向异性行为,尤其是在容易出现机械缺陷的焊缝区域。本研究旨在通过综合计算建模技术,提高注塑成型纤维增强热塑性复合材料(FRP)机械性能的可预测性。通过使用 MOLDEX3D 和 DIGIMAT RP 等软件,本研究将纤维取向和焊接线效应的实时数据整合到有限元分析(FEA)模型中。对 40% 玻璃纤维增强聚酰胺(PA6)的模拟显示了不同浇口数对机械强度的影响,突出了焊缝区域的影响。研究结果表明,加入纤维取向和焊接线数据可显著提高有限元分析模型的准确性,从而更好地预测部件的性能。
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Computational modeling of weld-line impacts on mechanical behavior of fiber-reinforced thermoplastics
The areas where the weld line is located are weak areas in terms of impact strength and tensile strength, which negatively affects the overall strength of the final product. It can also cause visual defects on the surface and create an aesthetically undesirable situation. The injection molding process introduces anisotropic behaviors in materials, particularly in weld-line areas, which are proned to mechanical weaknesses. This study aims to enhance the predictability of the mechanical performance of injection-molded fiber-reinforced thermoplastic composites (FRPs) through a comprehensive computational modeling technique. By using software such as MOLDEX3D and DIGIMAT RP, this research integrates real-time data on fiber orientation and weld-line effects into the finite element analysis (FEA) models. Simulations of 40% glass fiber reinforced polyamide (PA6) revealed the impact of different gate numbers on mechanical strength, highlighting the influence of weld-line regions. The findings suggest that incorporating fiber orientation and weld-line data significantly improves the accuracy of FEA models, leading to better predictions in the performance of the parts.
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来源期刊
CiteScore
7.00
自引率
7.30%
发文量
275
审稿时长
48 days
期刊介绍: The European Journal of Mechanics endash; A/Solids continues to publish articles in English in all areas of Solid Mechanics from the physical and mathematical basis to materials engineering, technological applications and methods of modern computational mechanics, both pure and applied research.
期刊最新文献
Computational modeling of weld-line impacts on mechanical behavior of fiber-reinforced thermoplastics Driving response analysis of twisted and coiled polymer actuators by considering the viscoelastic behavior of their precursor fibers Elastodynamic analysis of rotating solids by novel nodal position finite element method A diffuse interface model for electro-chemo-mechanical systems Flexural behaviors of asymmetric Re-entrant auxetic honeycombs
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